diff --git a/newProject/.gitignore b/Assignment_12/.gitignore
similarity index 100%
rename from newProject/.gitignore
rename to Assignment_12/.gitignore
diff --git a/newProject/.idea/.name b/Assignment_12/.idea/.name
similarity index 100%
rename from newProject/.idea/.name
rename to Assignment_12/.idea/.name
diff --git a/newProject/.idea/compiler.xml b/Assignment_12/.idea/compiler.xml
similarity index 100%
rename from newProject/.idea/compiler.xml
rename to Assignment_12/.idea/compiler.xml
diff --git a/newProject/.idea/deploymentTargetSelector.xml b/Assignment_12/.idea/deploymentTargetSelector.xml
similarity index 100%
rename from newProject/.idea/deploymentTargetSelector.xml
rename to Assignment_12/.idea/deploymentTargetSelector.xml
diff --git a/newProject/.idea/gradle.xml b/Assignment_12/.idea/gradle.xml
similarity index 90%
rename from newProject/.idea/gradle.xml
rename to Assignment_12/.idea/gradle.xml
index 32522c1..0897082 100644
--- a/newProject/.idea/gradle.xml
+++ b/Assignment_12/.idea/gradle.xml
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
   <component name="GradleSettings">
     <option name="linkedExternalProjectsSettings">
       <GradleProjectSettings>
diff --git a/newProject/.idea/kotlinc.xml b/Assignment_12/.idea/kotlinc.xml
similarity index 74%
rename from newProject/.idea/kotlinc.xml
rename to Assignment_12/.idea/kotlinc.xml
index fdf8d99..bb44937 100644
--- a/newProject/.idea/kotlinc.xml
+++ b/Assignment_12/.idea/kotlinc.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="KotlinJpsPluginSettings">
-    <option name="version" value="1.9.0" />
+    <option name="version" value="2.1.0" />
   </component>
 </project>
\ No newline at end of file
diff --git a/newProject/.idea/migrations.xml b/Assignment_12/.idea/migrations.xml
similarity index 100%
rename from newProject/.idea/migrations.xml
rename to Assignment_12/.idea/migrations.xml
diff --git a/newProject/.idea/misc.xml b/Assignment_12/.idea/misc.xml
similarity index 91%
rename from newProject/.idea/misc.xml
rename to Assignment_12/.idea/misc.xml
index 0ad17cb..8978d23 100644
--- a/newProject/.idea/misc.xml
+++ b/Assignment_12/.idea/misc.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="ExternalStorageConfigurationManager" enabled="true" />
   <component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="jbr-17" project-jdk-type="JavaSDK">
diff --git a/Assignment_12/.idea/render.experimental.xml b/Assignment_12/.idea/render.experimental.xml
new file mode 100644
index 0000000..8ec256a
--- /dev/null
+++ b/Assignment_12/.idea/render.experimental.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RenderSettings">
+    <option name="showDecorations" value="true" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/newProject/.idea/vcs.xml b/Assignment_12/.idea/vcs.xml
similarity index 100%
rename from newProject/.idea/vcs.xml
rename to Assignment_12/.idea/vcs.xml
diff --git a/newProject/app/.gitignore b/Assignment_12/app/.gitignore
similarity index 100%
rename from newProject/app/.gitignore
rename to Assignment_12/app/.gitignore
diff --git a/Assignment_12/app/build.gradle.kts b/Assignment_12/app/build.gradle.kts
new file mode 100644
index 0000000..8dbbea3
--- /dev/null
+++ b/Assignment_12/app/build.gradle.kts
@@ -0,0 +1,84 @@
+plugins {
+    alias(libs.plugins.android.application)
+    alias(libs.plugins.kotlin.android)
+    id("com.google.dagger.hilt.android")
+    id("com.google.devtools.ksp")
+    id("org.jetbrains.kotlin.plugin.compose")
+    id("kotlin-kapt")
+}
+
+android {
+    namespace = "com.example.assignment"
+    compileSdk = 35
+
+    defaultConfig {
+        applicationId = "com.example.assignment"
+        minSdk = 33
+        versionCode = 1
+        versionName = "1.0"
+
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            isMinifyEnabled = false
+            proguardFiles(
+                getDefaultProguardFile("proguard-android-optimize.txt"),
+                "proguard-rules.pro"
+            )
+        }
+    }
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
+    }
+    kotlinOptions {
+        jvmTarget = "17"
+    }
+    buildFeatures {
+        dataBinding = true
+        viewBinding = true
+        compose = true
+    }
+}
+
+dependencies {
+    implementation(libs.androidx.core.ktx)
+    implementation(libs.androidx.appcompat)
+    implementation(libs.material)
+    implementation(libs.androidx.activity)
+    implementation(libs.androidx.constraintlayout)
+    implementation(libs.androidx.activity.compose)
+    implementation(libs.recyclerview)
+    implementation(libs.kotlin.metadata.jvm)
+    implementation(libs.androidx.fragment.ktx)
+
+
+    implementation(libs.androidx.ui)
+    implementation(libs.androidx.material)
+    implementation(libs.androidx.ui.tooling.preview)
+    implementation(libs.androidx.material.icons.extended)
+
+    implementation(libs.androidx.lifecycle.runtime.ktx)
+    implementation(libs.androidx.lifecycle.viewmodel.compose)
+    implementation(libs.androidx.lifecycle.livedata.ktx)
+
+    implementation(libs.androidx.navigation.compose)
+
+    implementation(libs.hilt.android)
+    ksp(libs.hilt.compiler)
+    implementation(libs.androidx.hilt.navigation.compose)
+
+    implementation(libs.kotlinx.coroutines.core)
+    implementation(libs.kotlinx.coroutines.android)
+
+    implementation(libs.androidx.room.runtime)
+    ksp(libs.androidx.room.compiler)
+    implementation(libs.androidx.room.ktx)
+
+    testImplementation(libs.junit)
+    androidTestImplementation(libs.androidx.junit)
+    androidTestImplementation(libs.androidx.espresso.core)
+
+}
\ No newline at end of file
diff --git a/newProject/app/proguard-rules.pro b/Assignment_12/app/proguard-rules.pro
similarity index 100%
rename from newProject/app/proguard-rules.pro
rename to Assignment_12/app/proguard-rules.pro
diff --git a/newProject/app/src/androidTest/java/com/example/assignment/ExampleInstrumentedTest.kt b/Assignment_12/app/src/androidTest/java/com/example/assignment/ExampleInstrumentedTest.kt
similarity index 100%
rename from newProject/app/src/androidTest/java/com/example/assignment/ExampleInstrumentedTest.kt
rename to Assignment_12/app/src/androidTest/java/com/example/assignment/ExampleInstrumentedTest.kt
diff --git a/newProject/app/src/main/AndroidManifest.xml b/Assignment_12/app/src/main/AndroidManifest.xml
similarity index 73%
rename from newProject/app/src/main/AndroidManifest.xml
rename to Assignment_12/app/src/main/AndroidManifest.xml
index c909994..5e3f8c0 100644
--- a/newProject/app/src/main/AndroidManifest.xml
+++ b/Assignment_12/app/src/main/AndroidManifest.xml
@@ -3,6 +3,7 @@
     xmlns:tools="http://schemas.android.com/tools">
 
     <application
+        android:name="com.example.assignment.WordApp"
         android:allowBackup="true"
         android:dataExtractionRules="@xml/data_extraction_rules"
         android:fullBackupContent="@xml/backup_rules"
@@ -10,10 +11,10 @@
         android:label="@string/app_name"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
-        android:theme="@style/Theme.Assignment"
-        tools:targetApi="31">
+        android:theme="@style/Theme.Assignment">
+        <activity android:name="com.example.assignment.feature_word.presentation.AddEditWordActivity" />
         <activity
-            android:name=".MainActivity"
+            android:name="com.example.assignment.feature_word.presentation.MainActivity"
             android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
diff --git a/Assignment_12/app/src/main/java/com/example/assignment/WordApp.kt b/Assignment_12/app/src/main/java/com/example/assignment/WordApp.kt
new file mode 100644
index 0000000..93480b5
--- /dev/null
+++ b/Assignment_12/app/src/main/java/com/example/assignment/WordApp.kt
@@ -0,0 +1,7 @@
+package com.example.assignment
+
+import android.app.Application
+import dagger.hilt.android.HiltAndroidApp
+
+@HiltAndroidApp
+class WordApp : Application()
\ No newline at end of file
diff --git a/Assignment_12/app/src/main/java/com/example/assignment/di/AppModule.kt b/Assignment_12/app/src/main/java/com/example/assignment/di/AppModule.kt
new file mode 100644
index 0000000..116754b
--- /dev/null
+++ b/Assignment_12/app/src/main/java/com/example/assignment/di/AppModule.kt
@@ -0,0 +1,49 @@
+package com.example.assignment.di
+
+import android.app.Application
+import androidx.room.Room
+import com.example.assignment.feature_word.data.data_source.WordDatabase
+import com.example.assignment.feature_word.data.repository.WordRepositoryImpl
+import com.example.assignment.feature_word.domain.repository.WordRepository
+import com.example.assignment.feature_word.domain.use_case.AddWord
+import com.example.assignment.feature_word.domain.use_case.DeleteWord
+import com.example.assignment.feature_word.domain.use_case.GetWord
+import com.example.assignment.feature_word.domain.use_case.GetWords
+import com.example.assignment.feature_word.domain.use_case.WordUseCases
+import dagger.Module
+import dagger.Provides
+import dagger.hilt.InstallIn
+import dagger.hilt.components.SingletonComponent
+import javax.inject.Singleton
+
+@Module
+@InstallIn(SingletonComponent::class)
+object AppModule {
+
+    @Provides
+    @Singleton
+    fun provideWordDatabase(app: Application): WordDatabase {
+        return Room.databaseBuilder(
+            app,
+            WordDatabase::class.java,
+            WordDatabase.DATABASE_NAME
+        ).build()
+    }
+
+    @Provides
+    @Singleton
+    fun provideWordRepository(db: WordDatabase): WordRepository {
+        return WordRepositoryImpl(db.wordDao)
+    }
+
+    @Provides
+    @Singleton
+    fun provideWordUseCases(repository: WordRepository): WordUseCases {
+        return WordUseCases(
+            getWords = GetWords(repository),
+            deleteWord = DeleteWord(repository),
+            addWord = AddWord(repository),
+            getWord = GetWord(repository)
+        )
+    }
+}
\ No newline at end of file
diff --git a/Assignment_12/app/src/main/java/com/example/assignment/feature_word/data/data_source/WordDao.kt b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/data/data_source/WordDao.kt
new file mode 100644
index 0000000..ce7f133
--- /dev/null
+++ b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/data/data_source/WordDao.kt
@@ -0,0 +1,27 @@
+package com.example.assignment.feature_word.data.data_source
+
+import androidx.room.Dao
+import androidx.room.Delete
+import androidx.room.Insert
+import androidx.room.OnConflictStrategy
+import androidx.room.Query
+import com.example.assignment.feature_word.domain.model.Word
+import kotlinx.coroutines.flow.Flow
+
+
+@Dao
+interface WordDao {
+
+    @Query("SELECT * FROM word")
+    fun getWords(): Flow<List<Word>>
+
+    @Query("SELECT * FROM word WHERE id = :id")
+    suspend fun getWordById(id: Int): Word?
+
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    suspend fun insertWord(word: Word)
+
+    @Delete
+    suspend fun deleteWord(word: Word)
+
+}
\ No newline at end of file
diff --git a/Assignment_12/app/src/main/java/com/example/assignment/feature_word/data/data_source/WordDatabase.kt b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/data/data_source/WordDatabase.kt
new file mode 100644
index 0000000..ee12c72
--- /dev/null
+++ b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/data/data_source/WordDatabase.kt
@@ -0,0 +1,15 @@
+package com.example.assignment.feature_word.data.data_source
+
+import androidx.room.Database
+import androidx.room.RoomDatabase
+import com.example.assignment.feature_word.domain.model.Word
+
+@Database(entities = [Word::class], version = 1, exportSchema = false)
+abstract class WordDatabase : RoomDatabase() {
+
+    abstract val wordDao : WordDao
+
+    companion object {
+        const val DATABASE_NAME = "words_db"
+    }
+}
\ No newline at end of file
diff --git a/Assignment_12/app/src/main/java/com/example/assignment/feature_word/data/repository/WordRepositoryImpl.kt b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/data/repository/WordRepositoryImpl.kt
new file mode 100644
index 0000000..eedf785
--- /dev/null
+++ b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/data/repository/WordRepositoryImpl.kt
@@ -0,0 +1,26 @@
+package com.example.assignment.feature_word.data.repository
+
+import com.example.assignment.feature_word.data.data_source.WordDao
+import com.example.assignment.feature_word.domain.model.Word
+import com.example.assignment.feature_word.domain.repository.WordRepository
+import kotlinx.coroutines.flow.Flow
+
+class WordRepositoryImpl(
+    private val dao: WordDao
+) : WordRepository {
+    override fun getWords(): Flow<List<Word>> {
+        return dao.getWords()
+    }
+
+    override suspend fun getWordById(id: Int): Word? {
+        return dao.getWordById(id)
+    }
+
+    override suspend fun insertWord(word: Word) {
+        dao.insertWord(word)
+    }
+
+    override suspend fun deleteWord(word: Word) {
+        dao.deleteWord(word)
+    }
+}
\ No newline at end of file
diff --git a/Assignment_12/app/src/main/java/com/example/assignment/feature_word/domain/model/Word.kt b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/domain/model/Word.kt
new file mode 100644
index 0000000..707bf22
--- /dev/null
+++ b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/domain/model/Word.kt
@@ -0,0 +1,13 @@
+package com.example.assignment.feature_word.domain.model
+
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+
+@Entity
+data class Word(
+    val word: String,
+    val meaning: String,
+    @PrimaryKey(autoGenerate = true) val id: Int? = null
+)
+
+class InvalidWordException(message: String): Exception(message)
\ No newline at end of file
diff --git a/Assignment_12/app/src/main/java/com/example/assignment/feature_word/domain/repository/WordRepository.kt b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/domain/repository/WordRepository.kt
new file mode 100644
index 0000000..0992840
--- /dev/null
+++ b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/domain/repository/WordRepository.kt
@@ -0,0 +1,16 @@
+package com.example.assignment.feature_word.domain.repository
+
+import com.example.assignment.feature_word.domain.model.Word
+import kotlinx.coroutines.flow.Flow
+
+interface WordRepository {
+
+    fun getWords(): Flow<List<Word>>
+
+    suspend fun getWordById(id: Int): Word?
+
+    suspend fun insertWord(word: Word)
+
+    suspend fun deleteWord(word: Word)
+
+}
\ No newline at end of file
diff --git a/Assignment_12/app/src/main/java/com/example/assignment/feature_word/domain/use_case/AddWord.kt b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/domain/use_case/AddWord.kt
new file mode 100644
index 0000000..98a7824
--- /dev/null
+++ b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/domain/use_case/AddWord.kt
@@ -0,0 +1,21 @@
+package com.example.assignment.feature_word.domain.use_case
+
+import com.example.assignment.feature_word.domain.model.InvalidWordException
+import com.example.assignment.feature_word.domain.model.Word
+import com.example.assignment.feature_word.domain.repository.WordRepository
+
+class AddWord(
+    private val repository: WordRepository
+) {
+
+    @Throws(InvalidWordException::class)
+    suspend operator fun invoke(word: Word) {
+        if(word.word.isBlank()) {
+            throw InvalidWordException("단어명 항목이 비어있습니다.")
+        }
+        if(word.meaning.isBlank()) {
+            throw InvalidWordException("단어 뜻 항목이 비어있습니다.")
+        }
+        repository.insertWord(word)
+    }
+}
\ No newline at end of file
diff --git a/Assignment_12/app/src/main/java/com/example/assignment/feature_word/domain/use_case/DeleteWord.kt b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/domain/use_case/DeleteWord.kt
new file mode 100644
index 0000000..f91cad7
--- /dev/null
+++ b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/domain/use_case/DeleteWord.kt
@@ -0,0 +1,12 @@
+package com.example.assignment.feature_word.domain.use_case
+
+import com.example.assignment.feature_word.domain.model.Word
+import com.example.assignment.feature_word.domain.repository.WordRepository
+
+class DeleteWord(
+    private val repository: WordRepository
+) {
+    suspend operator fun invoke(word: Word) {
+        repository.deleteWord(word)
+    }
+}
\ No newline at end of file
diff --git a/Assignment_12/app/src/main/java/com/example/assignment/feature_word/domain/use_case/GetWord.kt b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/domain/use_case/GetWord.kt
new file mode 100644
index 0000000..0fd5841
--- /dev/null
+++ b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/domain/use_case/GetWord.kt
@@ -0,0 +1,14 @@
+package com.example.assignment.feature_word.domain.use_case
+
+import com.example.assignment.feature_word.domain.model.Word
+import com.example.assignment.feature_word.domain.repository.WordRepository
+
+class GetWord(
+    private val repository: WordRepository
+) {
+
+    suspend operator fun invoke(id: Int): Word? {
+        return repository.getWordById(id)
+    }
+
+}
\ No newline at end of file
diff --git a/Assignment_12/app/src/main/java/com/example/assignment/feature_word/domain/use_case/GetWords.kt b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/domain/use_case/GetWords.kt
new file mode 100644
index 0000000..6b62526
--- /dev/null
+++ b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/domain/use_case/GetWords.kt
@@ -0,0 +1,14 @@
+package com.example.assignment.feature_word.domain.use_case
+
+import com.example.assignment.feature_word.domain.model.Word
+import com.example.assignment.feature_word.domain.repository.WordRepository
+import kotlinx.coroutines.flow.Flow
+
+class GetWords(
+    private val repository: WordRepository
+) {
+
+    operator fun invoke(): Flow<List<Word>> {
+        return repository.getWords()
+    }
+}
\ No newline at end of file
diff --git a/Assignment_12/app/src/main/java/com/example/assignment/feature_word/domain/use_case/WordUseCases.kt b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/domain/use_case/WordUseCases.kt
new file mode 100644
index 0000000..64f619c
--- /dev/null
+++ b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/domain/use_case/WordUseCases.kt
@@ -0,0 +1,8 @@
+package com.example.assignment.feature_word.domain.use_case
+
+data class WordUseCases(
+    val getWords: GetWords,
+    val deleteWord: DeleteWord,
+    val addWord: AddWord,
+    val getWord: GetWord
+)
diff --git a/Assignment_12/app/src/main/java/com/example/assignment/feature_word/presentation/AddEditWordActivity.kt b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/presentation/AddEditWordActivity.kt
new file mode 100644
index 0000000..f8a1a54
--- /dev/null
+++ b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/presentation/AddEditWordActivity.kt
@@ -0,0 +1,86 @@
+package com.example.assignment.feature_word.presentation
+
+import android.os.Bundle
+import androidx.activity.viewModels
+import androidx.appcompat.app.AppCompatActivity
+import androidx.core.widget.addTextChangedListener
+import androidx.databinding.DataBindingUtil
+import androidx.lifecycle.lifecycleScope
+import com.example.assignment.R
+import com.example.assignment.databinding.ActivityAddEditWordBinding
+import com.example.assignment.feature_word.presentation.add_edit_word.AddEditWordEvent
+import com.example.assignment.feature_word.presentation.add_edit_word.AddEditWordViewModel
+import com.google.android.material.snackbar.Snackbar
+import dagger.hilt.android.AndroidEntryPoint
+import kotlinx.coroutines.launch
+
+@AndroidEntryPoint
+class AddEditWordActivity : AppCompatActivity() {
+
+    private lateinit var binding: ActivityAddEditWordBinding
+    private val viewModel: AddEditWordViewModel by viewModels()
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        binding = DataBindingUtil.setContentView(this, R.layout.activity_add_edit_word)
+        binding.addEditWordViewModel = viewModel
+        binding.lifecycleOwner = this
+
+
+        val wordId = intent.getIntExtra("wordId", -1)
+        if (wordId != -1) {
+            viewModel.onEvent(AddEditWordEvent.EnteredWordName(intent.getStringExtra("wordName") ?: ""))
+            viewModel.onEvent(AddEditWordEvent.EnteredMeaning(intent.getStringExtra("wordMeaning") ?: ""))
+        }
+
+        setupObservers()
+        setupListeners()
+    }
+
+    private fun setupObservers() {
+        lifecycleScope.launch {
+            viewModel.eventFlow.collect { event ->
+                when (event) {
+                    is AddEditWordViewModel.UiEvent.SaveWord -> {
+                        finish()
+                    }
+                    is AddEditWordViewModel.UiEvent.ShowSnackbar -> {
+                        Snackbar.make(
+                            binding.root,
+                            event.message,
+                            Snackbar.LENGTH_SHORT
+                        ).show()
+                    }
+
+                    else -> {}
+                }
+            }
+        }
+    }
+
+    private fun setupListeners() {
+        binding.etAddEditWord.addTextChangedListener { text ->
+            viewModel.onEvent(AddEditWordEvent.EnteredWordName(text.toString()))
+        }
+
+        binding.etAddEditMeaning.addTextChangedListener { text ->
+            viewModel.onEvent(AddEditWordEvent.EnteredMeaning(text.toString()))
+        }
+
+        binding.btnAddWord.setOnClickListener {
+            val wordName = binding.etAddEditWord.text.toString()
+            val wordMeaning = binding.etAddEditMeaning.text.toString()
+
+            if(wordName.isBlank() || wordMeaning.isBlank()) {
+                Snackbar.make(
+                    binding.root,
+                    "단어와 뜻을 모두 입력해야합니다.",
+                    Snackbar.LENGTH_SHORT
+                ).show()
+                return@setOnClickListener
+            }
+            viewModel.onEvent(AddEditWordEvent.SaveWord)
+        }
+    }
+}
\ No newline at end of file
diff --git a/Assignment_12/app/src/main/java/com/example/assignment/feature_word/presentation/MainActivity.kt b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/presentation/MainActivity.kt
new file mode 100644
index 0000000..12bb951
--- /dev/null
+++ b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/presentation/MainActivity.kt
@@ -0,0 +1,76 @@
+package com.example.assignment.feature_word.presentation
+
+import android.content.Intent
+import android.os.Bundle
+import androidx.activity.viewModels
+import androidx.appcompat.app.AppCompatActivity
+import androidx.databinding.DataBindingUtil
+import androidx.recyclerview.widget.LinearLayoutManager
+import com.example.assignment.R
+import com.example.assignment.databinding.ActivityMainBinding
+import com.example.assignment.feature_word.presentation.words.WordsEvent
+import com.example.assignment.feature_word.presentation.words.WordsViewModel
+import com.example.assignment.feature_word.presentation.words.components.WordAdapter
+import dagger.hilt.android.AndroidEntryPoint
+
+@AndroidEntryPoint
+class MainActivity : AppCompatActivity() {
+
+    private lateinit var binding: ActivityMainBinding
+    private lateinit var wordAdapter: WordAdapter
+    private val viewModel: WordsViewModel by viewModels()
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        binding = DataBindingUtil.setContentView(this, R.layout.activity_main)
+        binding.wordsViewModel = viewModel
+        binding.lifecycleOwner = this
+
+        wordAdapter = WordAdapter()
+
+        updateRecyclerView()
+        setupListeners()
+    }
+
+    private fun updateRecyclerView() {
+        binding.rvMainWordList.apply {
+            adapter = wordAdapter
+            layoutManager = LinearLayoutManager(this@MainActivity)
+        }
+    }
+
+    private fun setupListeners() {
+        wordAdapter.setOnDeleteClickListener { word ->
+            viewModel.onEvent(WordsEvent.DeleteWord(word))
+        }
+
+        wordAdapter.setOnItemClickListener { word ->
+            viewModel.setSelectedWord(word)
+        }
+
+        binding.btnMainDelete.setOnClickListener {
+            viewModel.selectedWord.value?.let { word ->
+                viewModel.onEvent(WordsEvent.DeleteWord(word))
+            }
+        }
+
+        binding.btnMainEdit.setOnClickListener {
+            viewModel.selectedWord.value?.let { word ->
+                val intent = Intent(this, AddEditWordActivity::class.java).apply {
+                    putExtra("wordId", word.id)
+                }
+                startActivity(intent)
+            }
+            viewModel.clearSelectedWord()
+        }
+
+        binding.btnMainAdd.setOnClickListener {
+            val intent = Intent(this, AddEditWordActivity::class.java).apply {
+                putExtra("wordId", -1)
+            }
+            startActivity(intent)
+            viewModel.clearSelectedWord()
+        }
+    }
+}
\ No newline at end of file
diff --git a/Assignment_12/app/src/main/java/com/example/assignment/feature_word/presentation/add_edit_word/AddEditWordEvent.kt b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/presentation/add_edit_word/AddEditWordEvent.kt
new file mode 100644
index 0000000..51580e1
--- /dev/null
+++ b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/presentation/add_edit_word/AddEditWordEvent.kt
@@ -0,0 +1,7 @@
+package com.example.assignment.feature_word.presentation.add_edit_word
+
+sealed class AddEditWordEvent {
+    data class EnteredWordName(val value: String) : AddEditWordEvent()
+    data class EnteredMeaning(val value: String) : AddEditWordEvent()
+    object SaveWord : AddEditWordEvent()
+}
\ No newline at end of file
diff --git a/Assignment_12/app/src/main/java/com/example/assignment/feature_word/presentation/add_edit_word/AddEditWordViewModel.kt b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/presentation/add_edit_word/AddEditWordViewModel.kt
new file mode 100644
index 0000000..8a28623
--- /dev/null
+++ b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/presentation/add_edit_word/AddEditWordViewModel.kt
@@ -0,0 +1,85 @@
+package com.example.assignment.feature_word.presentation.add_edit_word
+
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.SavedStateHandle
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.example.assignment.feature_word.domain.model.InvalidWordException
+import com.example.assignment.feature_word.domain.model.Word
+import com.example.assignment.feature_word.domain.use_case.WordUseCases
+import dagger.hilt.android.lifecycle.HiltViewModel
+import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.coroutines.flow.asSharedFlow
+import kotlinx.coroutines.launch
+import javax.inject.Inject
+
+@HiltViewModel
+class AddEditWordViewModel @Inject constructor(
+    private val wordUseCases: WordUseCases,
+    savedStateHandle: SavedStateHandle
+) : ViewModel() {
+
+    private val _wordName = MutableLiveData("")
+    val wordName: LiveData<String> = _wordName
+
+    private val _wordMeaning = MutableLiveData("")
+    val wordMeaning: LiveData<String> = _wordMeaning
+
+    private val _eventFlow = MutableSharedFlow<UiEvent>()
+    val eventFlow = _eventFlow.asSharedFlow()
+
+    private var currentWordId: Int? = null
+
+    init {
+        savedStateHandle.get<Int>("wordId")?.let { wordId ->
+            if (wordId != -1) {
+                viewModelScope.launch {
+                    wordUseCases.getWord(wordId)?.also { word ->
+                        currentWordId = word.id
+                        _wordName.value = word.word
+                        _wordMeaning.value = word.meaning
+                    }
+                }
+            }
+        }
+    }
+
+    fun onEvent(event: AddEditWordEvent) {
+        when (event) {
+            is AddEditWordEvent.EnteredWordName -> {
+                _wordName.value = event.value
+            }
+
+            is AddEditWordEvent.EnteredMeaning -> {
+                _wordMeaning.value = event.value
+            }
+
+            is AddEditWordEvent.SaveWord -> {
+                viewModelScope.launch {
+                    try {
+                        wordUseCases.addWord(
+                            Word(
+                                word = wordName.value ?: "",
+                                meaning = wordMeaning.value ?: "",
+                                id = currentWordId
+                            )
+                        )
+                        _eventFlow.emit(UiEvent.SaveWord)
+                    } catch (e: InvalidWordException) {
+                        _eventFlow.emit(
+                            UiEvent.ShowSnackbar(
+                                message = e.message ?: "단어 저장이 실패했습니다."
+                            )
+                        )
+                    }
+                }
+            }
+        }
+    }
+
+    sealed class UiEvent {
+        data class ShowSnackbar(val message: String) : UiEvent()
+        object SaveWord : UiEvent()
+    }
+}
\ No newline at end of file
diff --git a/Assignment_12/app/src/main/java/com/example/assignment/feature_word/presentation/words/WordState.kt b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/presentation/words/WordState.kt
new file mode 100644
index 0000000..f5b4860
--- /dev/null
+++ b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/presentation/words/WordState.kt
@@ -0,0 +1,7 @@
+package com.example.assignment.feature_word.presentation.words
+
+import com.example.assignment.feature_word.domain.model.Word
+
+data class WordState(
+    val words: List<Word> = emptyList()
+)
diff --git a/Assignment_12/app/src/main/java/com/example/assignment/feature_word/presentation/words/WordsEvent.kt b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/presentation/words/WordsEvent.kt
new file mode 100644
index 0000000..ab7c109
--- /dev/null
+++ b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/presentation/words/WordsEvent.kt
@@ -0,0 +1,7 @@
+package com.example.assignment.feature_word.presentation.words
+
+import com.example.assignment.feature_word.domain.model.Word
+
+sealed class WordsEvent {
+    data class DeleteWord(val word: Word): WordsEvent()
+}
\ No newline at end of file
diff --git a/Assignment_12/app/src/main/java/com/example/assignment/feature_word/presentation/words/WordsViewModel.kt b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/presentation/words/WordsViewModel.kt
new file mode 100644
index 0000000..f8e870f
--- /dev/null
+++ b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/presentation/words/WordsViewModel.kt
@@ -0,0 +1,56 @@
+package com.example.assignment.feature_word.presentation.words
+
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.example.assignment.feature_word.domain.model.Word
+import com.example.assignment.feature_word.domain.use_case.WordUseCases
+import dagger.hilt.android.lifecycle.HiltViewModel
+import kotlinx.coroutines.launch
+import javax.inject.Inject
+
+@HiltViewModel
+class WordsViewModel @Inject constructor(
+    private val wordUseCases: WordUseCases
+) : ViewModel() {
+
+    private val _state = MutableLiveData(WordState())
+    val state: LiveData<WordState> = _state
+
+    private val _selectedWord = MutableLiveData<Word?>()
+    val selectedWord: LiveData<Word?> = _selectedWord
+
+    init {
+        getWords()
+    }
+
+    private fun getWords() {
+        viewModelScope.launch {
+            wordUseCases.getWords().collect { words ->
+                _state.value = state.value?.copy(
+                    words = words
+                )
+            }
+        }
+    }
+
+    fun setSelectedWord(word: Word?) {
+        _selectedWord.value = word
+    }
+
+    fun clearSelectedWord() {
+        _selectedWord.value = null
+    }
+
+    fun onEvent(event: WordsEvent) {
+        when (event) {
+            is WordsEvent.DeleteWord -> {
+                viewModelScope.launch {
+                    wordUseCases.deleteWord(event.word)
+                    clearSelectedWord()
+                }
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/Assignment_12/app/src/main/java/com/example/assignment/feature_word/presentation/words/components/WordAdapter.kt b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/presentation/words/components/WordAdapter.kt
new file mode 100644
index 0000000..02c664b
--- /dev/null
+++ b/Assignment_12/app/src/main/java/com/example/assignment/feature_word/presentation/words/components/WordAdapter.kt
@@ -0,0 +1,71 @@
+package com.example.assignment.feature_word.presentation.words.components
+
+import android.annotation.SuppressLint
+import android.view.LayoutInflater
+import android.view.ViewGroup
+import androidx.databinding.BindingAdapter
+import androidx.recyclerview.widget.RecyclerView
+import com.example.assignment.databinding.ItemWordBinding
+import com.example.assignment.feature_word.domain.model.Word
+
+class WordAdapter : RecyclerView.Adapter<WordAdapter.WordViewHolder>() {
+    private var words = emptyList<Word>()
+    private var onDeleteClickListener: ((Word) -> Unit)? = null
+    private var onItemClickListener: ((Word) -> Unit)? = null
+
+    inner class WordViewHolder(private val binding: ItemWordBinding) :
+        RecyclerView.ViewHolder(binding.root) {
+        fun bind(word: Word) {
+            binding.word = word
+            binding.executePendingBindings()
+
+            itemView.setOnClickListener {
+                onItemClickListener?.let { click ->
+                    click(word)
+                }
+            }
+        }
+    }
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): WordViewHolder {
+        val binding = ItemWordBinding.inflate(
+            LayoutInflater.from(parent.context),
+            parent,
+            false
+        )
+        return WordViewHolder(binding)
+    }
+
+    override fun getItemCount(): Int {
+        return words.size
+    }
+
+    override fun onBindViewHolder(holder: WordViewHolder, position: Int) {
+        val word = words[position]
+        holder.bind(word)
+    }
+
+    @SuppressLint("NotifyDataSetChanged")
+    fun setData(newWords: List<Word>) {
+        words = newWords
+        notifyDataSetChanged()
+    }
+
+    fun setOnDeleteClickListener(listener: (Word) -> Unit) {
+        onDeleteClickListener = listener
+    }
+
+    fun setOnItemClickListener(listener: (Word) -> Unit) {
+        onItemClickListener = listener
+    }
+
+    companion object {
+        @JvmStatic
+        @BindingAdapter("items")
+        fun setItems(recyclerView: RecyclerView, items: List<Word>?) {
+            items?.let {
+                (recyclerView.adapter as? WordAdapter)?.setData(it)
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/Assignment_12/app/src/main/res/drawable/ic_add.xml b/Assignment_12/app/src/main/res/drawable/ic_add.xml
new file mode 100644
index 0000000..36802e9
--- /dev/null
+++ b/Assignment_12/app/src/main/res/drawable/ic_add.xml
@@ -0,0 +1,5 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="70dp" android:tint="#F3AD3C" android:viewportHeight="24" android:viewportWidth="24" android:width="70dp">
+      
+    <path android:fillColor="@android:color/white" android:pathData="M19,3L5,3c-1.11,0 -2,0.9 -2,2v14c0,1.1 0.89,2 2,2h14c1.1,0 2,-0.9 2,-2L21,5c0,-1.1 -0.9,-2 -2,-2zM17,13h-4v4h-2v-4L7,13v-2h4L11,7h2v4h4v2z"/>
+    
+</vector>
diff --git a/Assignment_12/app/src/main/res/drawable/ic_delete.xml b/Assignment_12/app/src/main/res/drawable/ic_delete.xml
new file mode 100644
index 0000000..2ffa117
--- /dev/null
+++ b/Assignment_12/app/src/main/res/drawable/ic_delete.xml
@@ -0,0 +1,5 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:tint="#808080" android:viewportHeight="24" android:viewportWidth="24" android:width="24dp">
+      
+    <path android:fillColor="@android:color/white" android:pathData="M6,19c0,1.1 0.9,2 2,2h8c1.1,0 2,-0.9 2,-2V7H6v12zM19,4h-3.5l-1,-1h-5l-1,1H5v2h14V4z"/>
+    
+</vector>
diff --git a/Assignment_12/app/src/main/res/drawable/ic_edit.xml b/Assignment_12/app/src/main/res/drawable/ic_edit.xml
new file mode 100644
index 0000000..8646330
--- /dev/null
+++ b/Assignment_12/app/src/main/res/drawable/ic_edit.xml
@@ -0,0 +1,5 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:tint="#808080" android:viewportHeight="24" android:viewportWidth="24" android:width="24dp">
+      
+    <path android:fillColor="@android:color/white" android:pathData="M3,17.25V21h3.75L17.81,9.94l-3.75,-3.75L3,17.25zM20.71,7.04c0.39,-0.39 0.39,-1.02 0,-1.41l-2.34,-2.34c-0.39,-0.39 -1.02,-0.39 -1.41,0l-1.83,1.83 3.75,3.75 1.83,-1.83z"/>
+    
+</vector>
diff --git a/newProject/app/src/main/res/drawable/ic_launcher_background.xml b/Assignment_12/app/src/main/res/drawable/ic_launcher_background.xml
similarity index 100%
rename from newProject/app/src/main/res/drawable/ic_launcher_background.xml
rename to Assignment_12/app/src/main/res/drawable/ic_launcher_background.xml
diff --git a/newProject/app/src/main/res/drawable/ic_launcher_foreground.xml b/Assignment_12/app/src/main/res/drawable/ic_launcher_foreground.xml
similarity index 100%
rename from newProject/app/src/main/res/drawable/ic_launcher_foreground.xml
rename to Assignment_12/app/src/main/res/drawable/ic_launcher_foreground.xml
diff --git a/Assignment_12/app/src/main/res/layout/activity_add_edit_word.xml b/Assignment_12/app/src/main/res/layout/activity_add_edit_word.xml
new file mode 100644
index 0000000..74cf0ee
--- /dev/null
+++ b/Assignment_12/app/src/main/res/layout/activity_add_edit_word.xml
@@ -0,0 +1,88 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <data>
+
+        <variable
+            name="addEditWordViewModel"
+            type="com.example.assignment.feature_word.presentation.add_edit_word.AddEditWordViewModel" />
+    </data>
+
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical"
+        android:padding="16dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center_horizontal"
+            android:paddingBottom="16dp"
+            android:text="@string/add_edit_activity_title_text"
+            android:textSize="24sp"
+            android:textStyle="bold" />
+
+        <com.google.android.material.textfield.TextInputLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:hint="@string/word_name"
+            app:boxBackgroundMode="outline"
+            app:expandedHintEnabled="false"
+            app:hintEnabled="true">
+
+            <com.google.android.material.textfield.TextInputEditText
+                android:id="@+id/et_add_edit_word"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:text="@{addEditWordViewModel.wordName}"
+                android:textSize="16sp" />
+
+        </com.google.android.material.textfield.TextInputLayout>
+
+        <TextView
+            android:id="@+id/tv_word_char_count"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="0/30"
+            android:textAlignment="viewEnd"
+            android:textColor="#666666"
+            android:textSize="14sp" />
+
+        <com.google.android.material.textfield.TextInputLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:hint="@string/word_meaning"
+            app:boxBackgroundMode="outline"
+            app:expandedHintEnabled="false"
+            app:hintEnabled="true">
+
+            <com.google.android.material.textfield.TextInputEditText
+                android:id="@+id/et_add_edit_meaning"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:text="@{addEditWordViewModel.wordMeaning}"
+                android:textSize="16sp" />
+
+        </com.google.android.material.textfield.TextInputLayout>
+
+        <TextView
+            android:id="@+id/tv_meaning_char_count"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="0"
+            android:textAlignment="viewEnd"
+            android:textColor="#666666"
+            android:textSize="14sp" />
+
+        <Button
+            android:id="@+id/btn_add_word"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="15dp"
+            android:text="@string/add"
+            android:textSize="16sp" />
+    </LinearLayout>
+</layout>
\ No newline at end of file
diff --git a/Assignment_12/app/src/main/res/layout/activity_main.xml b/Assignment_12/app/src/main/res/layout/activity_main.xml
new file mode 100644
index 0000000..d9e1bc9
--- /dev/null
+++ b/Assignment_12/app/src/main/res/layout/activity_main.xml
@@ -0,0 +1,100 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <data>
+
+        <variable
+            name="wordsViewModel"
+            type="com.example.assignment.feature_word.presentation.words.WordsViewModel" />
+    </data>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="horizontal"
+            android:padding="15dp">
+
+            <LinearLayout
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:orientation="vertical">
+
+                <TextView
+                    android:id="@+id/tv_main_word"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="@{wordsViewModel.selectedWord.word}"
+                    android:textSize="26sp"
+                    android:textStyle="bold" />
+
+                <TextView
+                    android:id="@+id/tv_main_word_meaning"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="10dp"
+                    android:text="@{wordsViewModel.selectedWord.meaning}"
+                    android:textSize="17sp" />
+
+            </LinearLayout>
+
+            <LinearLayout
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="right"
+                android:orientation="vertical">
+
+                <ImageButton
+                    android:id="@+id/btn_main_delete"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:backgroundTint="@android:color/transparent"
+                    android:src="@drawable/ic_delete" />
+
+                <ImageButton
+                    android:id="@+id/btn_main_edit"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:backgroundTint="@android:color/transparent"
+                    android:src="@drawable/ic_edit" />
+            </LinearLayout>
+
+        </LinearLayout>
+
+        <com.google.android.material.divider.MaterialDivider
+            android:layout_width="match_parent"
+            android:layout_height="2dp"
+            app:dividerColor="@color/light_gray"
+            app:dividerInsetEnd="16dp"
+            app:dividerInsetStart="16dp" />
+
+        <FrameLayout
+            android:layout_width="match_parent"
+            android:layout_height="match_parent">
+
+            <androidx.recyclerview.widget.RecyclerView
+                android:id="@+id/rv_main_word_list"
+                items="@{wordsViewModel.state.words}"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:padding="10dp" />
+
+            <ImageButton
+                android:id="@+id/btn_main_add"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="right|bottom"
+                android:layout_marginEnd="20dp"
+                android:layout_marginBottom="20dp"
+                android:backgroundTint="@color/transparent"
+                android:src="@drawable/ic_add" />
+        </FrameLayout>
+
+    </LinearLayout>
+</layout>
\ No newline at end of file
diff --git a/Assignment_12/app/src/main/res/layout/item_word.xml b/Assignment_12/app/src/main/res/layout/item_word.xml
new file mode 100644
index 0000000..82f5f23
--- /dev/null
+++ b/Assignment_12/app/src/main/res/layout/item_word.xml
@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <data>
+
+        <variable
+            name="word"
+            type="com.example.assignment.feature_word.domain.model.Word" />
+    </data>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical">
+
+        <TextView
+            android:id="@+id/tv_item_word"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="15dp"
+            android:layout_marginEnd="15dp"
+            android:gravity="end"
+            android:text="@{word.word}"
+            android:textSize="20sp" />
+
+        <TextView
+            android:id="@+id/tv_item_word_meaning"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="5dp"
+            android:layout_marginEnd="15dp"
+            android:gravity="end"
+            android:text="@{word.meaning}"
+            android:textSize="15sp" />
+
+        <com.google.android.material.divider.MaterialDivider
+            android:layout_width="match_parent"
+            android:layout_height="1dp"
+            android:layout_marginTop="10dp"
+            app:dividerColor="@color/light_gray" />
+
+    </LinearLayout>
+</layout>
\ No newline at end of file
diff --git a/newProject/app/src/main/res/mipmap-anydpi/ic_launcher.xml b/Assignment_12/app/src/main/res/mipmap-anydpi/ic_launcher.xml
similarity index 100%
rename from newProject/app/src/main/res/mipmap-anydpi/ic_launcher.xml
rename to Assignment_12/app/src/main/res/mipmap-anydpi/ic_launcher.xml
diff --git a/newProject/app/src/main/res/mipmap-anydpi/ic_launcher_round.xml b/Assignment_12/app/src/main/res/mipmap-anydpi/ic_launcher_round.xml
similarity index 100%
rename from newProject/app/src/main/res/mipmap-anydpi/ic_launcher_round.xml
rename to Assignment_12/app/src/main/res/mipmap-anydpi/ic_launcher_round.xml
diff --git a/newProject/app/src/main/res/mipmap-hdpi/ic_launcher.webp b/Assignment_12/app/src/main/res/mipmap-hdpi/ic_launcher.webp
similarity index 100%
rename from newProject/app/src/main/res/mipmap-hdpi/ic_launcher.webp
rename to Assignment_12/app/src/main/res/mipmap-hdpi/ic_launcher.webp
diff --git a/newProject/app/src/main/res/mipmap-hdpi/ic_launcher_round.webp b/Assignment_12/app/src/main/res/mipmap-hdpi/ic_launcher_round.webp
similarity index 100%
rename from newProject/app/src/main/res/mipmap-hdpi/ic_launcher_round.webp
rename to Assignment_12/app/src/main/res/mipmap-hdpi/ic_launcher_round.webp
diff --git a/newProject/app/src/main/res/mipmap-mdpi/ic_launcher.webp b/Assignment_12/app/src/main/res/mipmap-mdpi/ic_launcher.webp
similarity index 100%
rename from newProject/app/src/main/res/mipmap-mdpi/ic_launcher.webp
rename to Assignment_12/app/src/main/res/mipmap-mdpi/ic_launcher.webp
diff --git a/newProject/app/src/main/res/mipmap-mdpi/ic_launcher_round.webp b/Assignment_12/app/src/main/res/mipmap-mdpi/ic_launcher_round.webp
similarity index 100%
rename from newProject/app/src/main/res/mipmap-mdpi/ic_launcher_round.webp
rename to Assignment_12/app/src/main/res/mipmap-mdpi/ic_launcher_round.webp
diff --git a/newProject/app/src/main/res/mipmap-xhdpi/ic_launcher.webp b/Assignment_12/app/src/main/res/mipmap-xhdpi/ic_launcher.webp
similarity index 100%
rename from newProject/app/src/main/res/mipmap-xhdpi/ic_launcher.webp
rename to Assignment_12/app/src/main/res/mipmap-xhdpi/ic_launcher.webp
diff --git a/newProject/app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp b/Assignment_12/app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp
similarity index 100%
rename from newProject/app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp
rename to Assignment_12/app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp
diff --git a/newProject/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp b/Assignment_12/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp
similarity index 100%
rename from newProject/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp
rename to Assignment_12/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp
diff --git a/newProject/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp b/Assignment_12/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp
similarity index 100%
rename from newProject/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp
rename to Assignment_12/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp
diff --git a/newProject/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp b/Assignment_12/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp
similarity index 100%
rename from newProject/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp
rename to Assignment_12/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp
diff --git a/newProject/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp b/Assignment_12/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp
similarity index 100%
rename from newProject/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp
rename to Assignment_12/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp
diff --git a/newProject/app/src/main/res/values-night/themes.xml b/Assignment_12/app/src/main/res/values-night/themes.xml
similarity index 100%
rename from newProject/app/src/main/res/values-night/themes.xml
rename to Assignment_12/app/src/main/res/values-night/themes.xml
diff --git a/newProject/app/src/main/res/values/colors.xml b/Assignment_12/app/src/main/res/values/colors.xml
similarity index 61%
rename from newProject/app/src/main/res/values/colors.xml
rename to Assignment_12/app/src/main/res/values/colors.xml
index c8524cd..c23e62e 100644
--- a/newProject/app/src/main/res/values/colors.xml
+++ b/Assignment_12/app/src/main/res/values/colors.xml
@@ -2,4 +2,6 @@
 <resources>
     <color name="black">#FF000000</color>
     <color name="white">#FFFFFFFF</color>
+    <color name="transparent">#00000000</color>
+    <color name="light_gray">#ced4da</color>
 </resources>
\ No newline at end of file
diff --git a/Assignment_12/app/src/main/res/values/strings.xml b/Assignment_12/app/src/main/res/values/strings.xml
new file mode 100644
index 0000000..a0f29cb
--- /dev/null
+++ b/Assignment_12/app/src/main/res/values/strings.xml
@@ -0,0 +1,7 @@
+<resources>
+    <string name="app_name">assignment</string>
+    <string name="add">추가</string>
+    <string name="word_name">단어</string>
+    <string name="word_meaning">뜻</string>
+    <string name="add_edit_activity_title_text">단어 추가</string>
+</resources>
\ No newline at end of file
diff --git a/newProject/app/src/main/res/values/themes.xml b/Assignment_12/app/src/main/res/values/themes.xml
similarity index 100%
rename from newProject/app/src/main/res/values/themes.xml
rename to Assignment_12/app/src/main/res/values/themes.xml
diff --git a/newProject/app/src/main/res/xml/backup_rules.xml b/Assignment_12/app/src/main/res/xml/backup_rules.xml
similarity index 100%
rename from newProject/app/src/main/res/xml/backup_rules.xml
rename to Assignment_12/app/src/main/res/xml/backup_rules.xml
diff --git a/newProject/app/src/main/res/xml/data_extraction_rules.xml b/Assignment_12/app/src/main/res/xml/data_extraction_rules.xml
similarity index 100%
rename from newProject/app/src/main/res/xml/data_extraction_rules.xml
rename to Assignment_12/app/src/main/res/xml/data_extraction_rules.xml
diff --git a/newProject/app/src/test/java/com/example/assignment/ExampleUnitTest.kt b/Assignment_12/app/src/test/java/com/example/assignment/ExampleUnitTest.kt
similarity index 100%
rename from newProject/app/src/test/java/com/example/assignment/ExampleUnitTest.kt
rename to Assignment_12/app/src/test/java/com/example/assignment/ExampleUnitTest.kt
diff --git a/newProject/build.gradle.kts b/Assignment_12/build.gradle.kts
similarity index 50%
rename from newProject/build.gradle.kts
rename to Assignment_12/build.gradle.kts
index 922f551..5c1dfc2 100644
--- a/newProject/build.gradle.kts
+++ b/Assignment_12/build.gradle.kts
@@ -2,4 +2,7 @@
 plugins {
     alias(libs.plugins.android.application) apply false
     alias(libs.plugins.kotlin.android) apply false
+    id("com.google.dagger.hilt.android") version "2.55" apply false
+    id("com.google.devtools.ksp") version "2.0.21-1.0.27" apply false
+    id("org.jetbrains.kotlin.plugin.compose") version "2.1.0" apply false
 }
\ No newline at end of file
diff --git a/newProject/gradle.properties b/Assignment_12/gradle.properties
similarity index 100%
rename from newProject/gradle.properties
rename to Assignment_12/gradle.properties
diff --git a/Assignment_12/gradle/libs.versions.toml b/Assignment_12/gradle/libs.versions.toml
new file mode 100644
index 0000000..08adf9e
--- /dev/null
+++ b/Assignment_12/gradle/libs.versions.toml
@@ -0,0 +1,61 @@
+[versions]
+agp = "8.6.0"
+fragmentKtx = "1.8.5"
+hiltAndroid = "2.55"
+hiltNavigationCompose = "1.2.0"
+kotlin = "2.1.0"
+coreKtx = "1.10.1"
+junit = "4.13.2"
+junitVersion = "1.2.1"
+espressoCore = "3.6.0"
+appcompat = "1.6.1"
+kotlinMetadataJvm = "2.1.0"
+kotlinxCoroutinesCore = "1.7.3"
+lifecycleLivedataKtx = "2.8.7"
+lifecycleRuntimeKtx = "2.6.2"
+lifecycleViewmodelCompose = "2.6.2"
+material = "1.11.0"
+activity = "1.7.2"
+constraintlayout = "2.1.4"
+materialVersion = "1.4.3"
+materialIconsExtended = "1.4.3"
+navigationCompose = "2.5.3"
+recyclerviewVersion = "1.3.1"
+roomRuntime = "2.5.2"
+roomCompiler = "2.5.2"
+ui = "1.7.7"
+
+[libraries]
+androidx-activity-compose = { module = "androidx.activity:activity-compose", version.ref = "activity" }
+androidx-core-ktx = { group = "androidx.core", name = "core-ktx", version.ref = "coreKtx" }
+androidx-fragment-ktx = { module = "androidx.fragment:fragment-ktx", version.ref = "fragmentKtx" }
+androidx-hilt-navigation-compose = { module = "androidx.hilt:hilt-navigation-compose", version.ref = "hiltNavigationCompose" }
+androidx-lifecycle-livedata-ktx = { module = "androidx.lifecycle:lifecycle-livedata-ktx", version.ref = "lifecycleLivedataKtx" }
+androidx-lifecycle-viewmodel-compose = { module = "androidx.lifecycle:lifecycle-viewmodel-compose", version.ref = "lifecycleViewmodelCompose" }
+androidx-lifecycle-runtime-ktx = { module = "androidx.lifecycle:lifecycle-runtime-ktx", version.ref = "lifecycleRuntimeKtx" }
+androidx-material-icons-extended = { module = "androidx.compose.material:material-icons-extended", version.ref = "materialIconsExtended" }
+androidx-material = { module = "androidx.compose.material:material", version.ref = "materialVersion" }
+androidx-navigation-compose = { module = "androidx.navigation:navigation-compose", version.ref = "navigationCompose" }
+androidx-room-ktx = { module = "androidx.room:room-ktx", version.ref = "roomRuntime" }
+androidx-room-compiler = { module = "androidx.room:room-compiler", version.ref = "roomCompiler" }
+androidx-room-runtime = { module = "androidx.room:room-runtime", version.ref = "roomRuntime" }
+androidx-ui = { module = "androidx.compose.ui:ui", version.ref = "ui" }
+androidx-ui-tooling-preview = { module = "androidx.compose.ui:ui-tooling-preview", version.ref = "ui" }
+hilt-android = { module = "com.google.dagger:hilt-android", version.ref = "hiltAndroid" }
+hilt-compiler = { module = "com.google.dagger:hilt-compiler", version.ref = "hiltAndroid" }
+junit = { group = "junit", name = "junit", version.ref = "junit" }
+androidx-junit = { group = "androidx.test.ext", name = "junit", version.ref = "junitVersion" }
+androidx-espresso-core = { group = "androidx.test.espresso", name = "espresso-core", version.ref = "espressoCore" }
+androidx-appcompat = { group = "androidx.appcompat", name = "appcompat", version.ref = "appcompat" }
+kotlin-metadata-jvm = { module = "org.jetbrains.kotlin:kotlin-metadata-jvm", version.ref = "kotlinMetadataJvm" }
+kotlinx-coroutines-android = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-android", version.ref = "kotlinxCoroutinesCore" }
+kotlinx-coroutines-core = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-core", version.ref = "kotlinxCoroutinesCore" }
+material = { group = "com.google.android.material", name = "material", version.ref = "material" }
+androidx-activity = { group = "androidx.activity", name = "activity", version.ref = "activity" }
+androidx-constraintlayout = { group = "androidx.constraintlayout", name = "constraintlayout", version.ref = "constraintlayout" }
+recyclerview = { module = "androidx.recyclerview:recyclerview", version.ref = "recyclerviewVersion" }
+
+[plugins]
+android-application = { id = "com.android.application", version.ref = "agp" }
+kotlin-android = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }
+
diff --git a/newProject/gradle/wrapper/gradle-wrapper.jar b/Assignment_12/gradle/wrapper/gradle-wrapper.jar
similarity index 100%
rename from newProject/gradle/wrapper/gradle-wrapper.jar
rename to Assignment_12/gradle/wrapper/gradle-wrapper.jar
diff --git a/newProject/gradle/wrapper/gradle-wrapper.properties b/Assignment_12/gradle/wrapper/gradle-wrapper.properties
similarity index 100%
rename from newProject/gradle/wrapper/gradle-wrapper.properties
rename to Assignment_12/gradle/wrapper/gradle-wrapper.properties
diff --git a/newProject/gradlew b/Assignment_12/gradlew
similarity index 100%
rename from newProject/gradlew
rename to Assignment_12/gradlew
diff --git a/newProject/gradlew.bat b/Assignment_12/gradlew.bat
similarity index 100%
rename from newProject/gradlew.bat
rename to Assignment_12/gradlew.bat
diff --git a/newProject/settings.gradle.kts b/Assignment_12/settings.gradle.kts
similarity index 100%
rename from newProject/settings.gradle.kts
rename to Assignment_12/settings.gradle.kts
diff --git a/newProject/app/build.gradle.kts b/newProject/app/build.gradle.kts
deleted file mode 100644
index 85372cb..0000000
--- a/newProject/app/build.gradle.kts
+++ /dev/null
@@ -1,48 +0,0 @@
-plugins {
-    alias(libs.plugins.android.application)
-    alias(libs.plugins.kotlin.android)
-}
-
-android {
-    namespace = "com.example.assignment"
-    compileSdk = 35
-
-    defaultConfig {
-        applicationId = "com.example.assignment"
-        minSdk = 34
-        targetSdk = 34
-        versionCode = 1
-        versionName = "1.0"
-
-        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
-    }
-
-    buildTypes {
-        release {
-            isMinifyEnabled = false
-            proguardFiles(
-                getDefaultProguardFile("proguard-android-optimize.txt"),
-                "proguard-rules.pro"
-            )
-        }
-    }
-    compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_1_8
-        targetCompatibility = JavaVersion.VERSION_1_8
-    }
-    kotlinOptions {
-        jvmTarget = "1.8"
-    }
-}
-
-dependencies {
-
-    implementation(libs.androidx.core.ktx)
-    implementation(libs.androidx.appcompat)
-    implementation(libs.material)
-    implementation(libs.androidx.activity)
-    implementation(libs.androidx.constraintlayout)
-    testImplementation(libs.junit)
-    androidTestImplementation(libs.androidx.junit)
-    androidTestImplementation(libs.androidx.espresso.core)
-}
\ No newline at end of file
diff --git a/newProject/app/src/main/java/com/example/assignment/MainActivity.kt b/newProject/app/src/main/java/com/example/assignment/MainActivity.kt
deleted file mode 100644
index 6164f33..0000000
--- a/newProject/app/src/main/java/com/example/assignment/MainActivity.kt
+++ /dev/null
@@ -1,20 +0,0 @@
-package com.example.assignment
-
-import android.os.Bundle
-import androidx.activity.enableEdgeToEdge
-import androidx.appcompat.app.AppCompatActivity
-import androidx.core.view.ViewCompat
-import androidx.core.view.WindowInsetsCompat
-
-class MainActivity : AppCompatActivity() {
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        enableEdgeToEdge()
-        setContentView(R.layout.activity_main)
-        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main)) { v, insets ->
-            val systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars())
-            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom)
-            insets
-        }
-    }
-}
\ No newline at end of file
diff --git a/newProject/app/src/main/res/layout/activity_main.xml b/newProject/app/src/main/res/layout/activity_main.xml
deleted file mode 100644
index 86a5d97..0000000
--- a/newProject/app/src/main/res/layout/activity_main.xml
+++ /dev/null
@@ -1,19 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:id="@+id/main"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    tools:context=".MainActivity">
-
-    <TextView
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:text="Hello World!"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
-
-</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/newProject/app/src/main/res/values/strings.xml b/newProject/app/src/main/res/values/strings.xml
deleted file mode 100644
index a33dffd..0000000
--- a/newProject/app/src/main/res/values/strings.xml
+++ /dev/null
@@ -1,3 +0,0 @@
-<resources>
-    <string name="app_name">assignment</string>
-</resources>
\ No newline at end of file
diff --git a/newProject/gradle/libs.versions.toml b/newProject/gradle/libs.versions.toml
deleted file mode 100644
index 04e14fb..0000000
--- a/newProject/gradle/libs.versions.toml
+++ /dev/null
@@ -1,26 +0,0 @@
-[versions]
-agp = "8.6.0"
-kotlin = "1.9.0"
-coreKtx = "1.15.0"
-junit = "4.13.2"
-junitVersion = "1.2.1"
-espressoCore = "3.6.1"
-appcompat = "1.7.0"
-material = "1.12.0"
-activity = "1.9.3"
-constraintlayout = "2.2.0"
-
-[libraries]
-androidx-core-ktx = { group = "androidx.core", name = "core-ktx", version.ref = "coreKtx" }
-junit = { group = "junit", name = "junit", version.ref = "junit" }
-androidx-junit = { group = "androidx.test.ext", name = "junit", version.ref = "junitVersion" }
-androidx-espresso-core = { group = "androidx.test.espresso", name = "espresso-core", version.ref = "espressoCore" }
-androidx-appcompat = { group = "androidx.appcompat", name = "appcompat", version.ref = "appcompat" }
-material = { group = "com.google.android.material", name = "material", version.ref = "material" }
-androidx-activity = { group = "androidx.activity", name = "activity", version.ref = "activity" }
-androidx-constraintlayout = { group = "androidx.constraintlayout", name = "constraintlayout", version.ref = "constraintlayout" }
-
-[plugins]
-android-application = { id = "com.android.application", version.ref = "agp" }
-kotlin-android = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }
-