diff --git a/internal/account/entity.go b/internal/account/entity.go
index f5e517d..8eca483 100644
--- a/internal/account/entity.go
+++ b/internal/account/entity.go
@@ -1,6 +1,6 @@
 package account
 
-type User struct {
+type Account struct {
 	ID       uint   `gorm:"primaryKey" json:"id"`
 	Username string `gorm:"unique" json:"username"`
 	Password string `json:"-"`
diff --git a/internal/account/repo.go b/internal/account/repo.go
index 113b320..f40d0da 100644
--- a/internal/account/repo.go
+++ b/internal/account/repo.go
@@ -4,60 +4,60 @@ import (
 	"gorm.io/gorm"
 )
 
-type UserRepository struct {
+type AccountRepository struct {
 	db *gorm.DB
 }
 
-func NewUserRepository(db *gorm.DB) *UserRepository {
-	return &UserRepository{db: db}
+func NewAccountRepository(db *gorm.DB) *AccountRepository {
+	return &AccountRepository{db: db}
 }
 
-func (ur *UserRepository) CreateUser(user *User) error {
-	if err := ur.db.Create(user).Error; err != nil {
+func (ar *AccountRepository) CreateAccount(account *Account) error {
+	if err := ar.db.Create(account).Error; err != nil {
 		return err
 	}
 	return nil
 }
 
-func (ur *UserRepository) RenameByID(id uint, newUsername string) error {
-	if err := ur.db.Model(&User{}).Where("id = ?", id).Update("username", newUsername).Error; err != nil {
+func (ar *AccountRepository) RenameByID(id uint, newUsername string) error {
+	if err := ar.db.Model(&Account{}).Where("id = ?", id).Update("username", newUsername).Error; err != nil {
 		return err
 	}
 	return nil
 }
 
-func (ur *UserRepository) ChangePassword(id uint, newPassword string) error {
-	if err := ur.db.Model(&User{}).Where("id = ?", id).Update("password", newPassword).Error; err != nil {
+func (ar *AccountRepository) ChangePassword(id uint, newPassword string) error {
+	if err := ar.db.Model(&Account{}).Where("id = ?", id).Update("password", newPassword).Error; err != nil {
 		return err
 	}
 	return nil
 }
 
-func (ur *UserRepository) FindByID(id uint) (*User, error) {
-	var user User
-	if err := ur.db.First(&user, id).Error; err != nil {
+func (ar *AccountRepository) FindByID(id uint) (*Account, error) {
+	var account Account
+	if err := ar.db.First(&account, id).Error; err != nil {
 		return nil, err
 	}
-	return &user, nil
+	return &account, nil
 }
 
-func (ur *UserRepository) FindByUsername(username string) (*User, error) {
-	var user User
-	if err := ur.db.Where("username = ?", username).First(&user).Error; err != nil {
+func (ar *AccountRepository) FindByUsername(username string) (*Account, error) {
+	var account Account
+	if err := ar.db.Where("username = ?", username).First(&account).Error; err != nil {
 		return nil, err
 	}
-	return &user, nil
+	return &account, nil
 }
 
-func (ur *UserRepository) Login(id uint, token string) error {
-	if err := ur.db.Model(&User{}).Where("id = ?", id).Update("token", token).Error; err != nil {
+func (ar *AccountRepository) Login(id uint, token string) error {
+	if err := ar.db.Model(&Account{}).Where("id = ?", id).Update("token", token).Error; err != nil {
 		return err
 	}
 	return nil
 }
 
-func (ur *UserRepository) Logout(id uint, token string) error {
-	if err := ur.db.Model(&User{}).Where("id = ?", id).Update("token", "").Error; err != nil {
+func (ar *AccountRepository) Logout(id uint, token string) error {
+	if err := ar.db.Model(&Account{}).Where("id = ?", id).Update("token", "").Error; err != nil {
 		return err
 	}
 	return nil
diff --git a/internal/account/service.go b/internal/account/service.go
index e60a893..556ee4b 100644
--- a/internal/account/service.go
+++ b/internal/account/service.go
@@ -7,94 +7,94 @@ import (
 	"golang.org/x/crypto/bcrypt"
 )
 
-type UserService struct {
-	userRepository *UserRepository
+type AccountService struct {
+	accountRepository *AccountRepository
 }
 
-func NewUserService(userRepository *UserRepository) *UserService {
-	return &UserService{userRepository: userRepository}
+func NewAccountService(accountRepository *AccountRepository) *AccountService {
+	return &AccountService{accountRepository: accountRepository}
 }
 
-func (us *UserService) CreateUser(user *User) error {
-	passwordHash, err := bcrypt.GenerateFromPassword([]byte(user.Password), bcrypt.DefaultCost)
+func (as *AccountService) CreateAccount(account *Account) error {
+	passwordHash, err := bcrypt.GenerateFromPassword([]byte(account.Password), bcrypt.DefaultCost)
 	if err != nil {
 		return err
 	}
-	user.Password = string(passwordHash)
-	if err := us.userRepository.CreateUser(user); err != nil {
+	account.Password = string(passwordHash)
+	if err := as.accountRepository.CreateAccount(account); err != nil {
 		return err
 	}
 	return nil
 }
 
-func (us *UserService) RenameByID(id uint, newUsername string) error {
-	if err := us.userRepository.RenameByID(id, newUsername); err != nil {
+func (as *AccountService) RenameByID(id uint, newUsername string) error {
+	if err := as.accountRepository.RenameByID(id, newUsername); err != nil {
 		return err
 	}
 	return nil
 }
 
-func (us *UserService) ChangePassword(username, oldPassword, newPassword string) error {
-	user, err := us.FindByUsername(username)
+func (as *AccountService) ChangePassword(username, oldPassword, newPassword string) error {
+	account, err := as.FindByUsername(username)
 	if err != nil {
 		return err
 	}
-	if err := bcrypt.CompareHashAndPassword([]byte(user.Password), []byte(oldPassword)); err != nil {
+	if err := bcrypt.CompareHashAndPassword([]byte(account.Password), []byte(oldPassword)); err != nil {
 		return err
 	}
 	passwordHash, err := bcrypt.GenerateFromPassword([]byte(newPassword), bcrypt.DefaultCost)
 	if err != nil {
 		return err
 	}
-	if err := us.userRepository.ChangePassword(user.ID, string(passwordHash)); err != nil {
+	if err := as.accountRepository.ChangePassword(account.ID, string(passwordHash)); err != nil {
 		return err
 	}
 	return nil
 }
 
-func (us *UserService) FindByID(id uint) (*User, error) {
-	if user, err := us.userRepository.FindByID(id); err != nil {
+func (as *AccountService) FindByID(id uint) (*Account, error) {
+	if account, err := as.accountRepository.FindByID(id); err != nil {
 		return nil, err
 	} else {
-		return user, nil
+		return account, nil
 	}
 }
 
-func (us *UserService) FindByUsername(username string) (*User, error) {
-	if user, err := us.userRepository.FindByUsername(username); err != nil {
+func (as *AccountService) FindByUsername(username string) (*Account, error) {
+	if account, err := as.accountRepository.FindByUsername(username); err != nil {
 		return nil, err
 	} else {
-		return user, nil
+		return account, nil
 	}
 }
 
-func (us *UserService) Login(username, password string) (string, error) {
-	user, err := us.FindByUsername(username)
+func (as *AccountService) Login(username, password string) (string, error) {
+	account, err := as.FindByUsername(username)
 	if err != nil {
 		return "", err
 	}
-	if err := bcrypt.CompareHashAndPassword([]byte(user.Password), []byte(password)); err != nil {
+	if err := bcrypt.CompareHashAndPassword([]byte(account.Password), []byte(password)); err != nil {
 		return "", err
 	}
 	// generate token
-	token, err := auth.GenerateToken(user.ID, user.Username)
+	token, err := auth.GenerateToken(account.ID, account.Username)
 	if err != nil {
 		return "", err
 	}
-	if err := us.userRepository.Login(user.ID, token); err != nil {
+	if err := as.accountRepository.Login(account.ID, token); err != nil {
 		return "", err
 	}
 
 	return token, nil
 }
 
-func (us *UserService) Logout(userID uint) error {
-	user, err := us.FindByID(userID)
+func (as *AccountService) Logout(accountID uint) error {
+	account, err := as.FindByID(accountID)
 	if err != nil {
 		return err
 	}
-	if user.Token == "" {
-		return errors.New("user already logged out")
+	if account.Token == "" {
+		return errors.New("account already logged out")
 	}
-	return us.userRepository.Logout(user.ID, user.Token)
+	return as.accountRepository.Logout(account.ID, account.Token)
 }
diff --git a/internal/auth/jwt.go b/internal/auth/jwt.go
index 08d7ea9..dd435ef 100644
--- a/internal/auth/jwt.go
+++ b/internal/auth/jwt.go
@@ -10,17 +10,17 @@ import (
 var secret = []byte("change-me-in-env")
 
 type Claims struct {
-	UserID   uint   `json:"user_id"`
-	Username string `json:"username"`
+	AccountID uint   `json:"account_id"`
+	Username  string `json:"username"`
 	jwt.RegisteredClaims
 }
 
-func GenerateToken(userID uint, username string) (string, error) {
+func GenerateToken(accountID uint, username string) (string, error) {
 	now := time.Now()
 
 	claims := Claims{
-		UserID:   userID,
-		Username: username,
+		AccountID: accountID,
+		Username:  username,
 		RegisteredClaims: jwt.RegisteredClaims{
 			ExpiresAt: jwt.NewNumericDate(now.Add(24 * time.Hour)),
 			IssuedAt:  jwt.NewNumericDate(now),
diff --git a/internal/db/db.go b/internal/db/db.go
index 9ee8b6d..cb7bfdb 100644
--- a/internal/db/db.go
+++ b/internal/db/db.go
@@ -22,7 +22,7 @@ func NewDB(dbcfg config.DatabaseConfig) (*gorm.DB, error) {
 }
 
 func AutoMigrate(db *gorm.DB) error {
-	return db.AutoMigrate(&account.User{})
+	return db.AutoMigrate(&account.Account{})
 }
 
 func CloseDB(db *gorm.DB) error {
diff --git a/internal/http/account_handler.go b/internal/http/account_handler.go
index 1dd661c..ca2be4a 100644
--- a/internal/http/account_handler.go
+++ b/internal/http/account_handler.go
@@ -6,16 +6,16 @@ import (
 	"github.com/gin-gonic/gin"
 )
 
-type UserHandler struct {
-	userService *account.UserService
+type AccountHandler struct {
+	accountService *account.AccountService
 }
 
-type CreateUserRequest struct {
+type CreateAccountRequest struct {
 	Username string `json:"username"`
 	Password string `json:"password"`
 }
 
-type CreateUserResponse struct {
+type CreateAccountResponse struct {
 }
 
 type RenameByIDRequest struct {
@@ -66,86 +66,86 @@ type LogoutRequest struct {
 type LogoutResponse struct {
 }
 
-func NewUserHandler(userService *account.UserService) *UserHandler {
-	return &UserHandler{userService: userService}
+func NewAccountHandler(accountService *account.AccountService) *AccountHandler {
+	return &AccountHandler{accountService: accountService}
 }
-func (h *UserHandler) CreateUser(c *gin.Context) {
-	var req CreateUserRequest
+func (h *AccountHandler) CreateAccount(c *gin.Context) {
+	var req CreateAccountRequest
 	if err := c.ShouldBindJSON(&req); err != nil {
 		c.JSON(400, gin.H{"error": err.Error()})
 		return
 	}
-	if err := h.userService.CreateUser(&account.User{
+	if err := h.accountService.CreateAccount(&account.Account{
 		Username: req.Username,
 		Password: req.Password,
 	}); err != nil {
 		c.JSON(500, gin.H{"error": err.Error()})
 		return
 	}
-	c.JSON(200, gin.H{"message": "user created"})
+	c.JSON(200, gin.H{"message": "account created"})
 }
 
-func (h *UserHandler) RenameByID(c *gin.Context) {
+func (h *AccountHandler) RenameByID(c *gin.Context) {
 	var req RenameByIDRequest
 	if err := c.ShouldBindJSON(&req); err != nil {
 		c.JSON(400, gin.H{"error": err.Error()})
 		return
 	}
-	if err := h.userService.RenameByID(req.ID, req.NewUsername); err != nil {
+	if err := h.accountService.RenameByID(req.ID, req.NewUsername); err != nil {
 		c.JSON(500, gin.H{"error": err.Error()})
 		return
 	}
-	c.JSON(200, gin.H{"message": "user renamed"})
+	c.JSON(200, gin.H{"message": "account renamed"})
 }
 
-func (h *UserHandler) ChangePassword(c *gin.Context) {
+func (h *AccountHandler) ChangePassword(c *gin.Context) {
 	var req ChangePasswordRequest
 	if err := c.ShouldBindJSON(&req); err != nil {
 		c.JSON(400, gin.H{"error": err.Error()})
 		return
 	}
-	if err := h.userService.ChangePassword(req.Username, req.OldPassword, req.NewPassword); err != nil {
+	if err := h.accountService.ChangePassword(req.Username, req.OldPassword, req.NewPassword); err != nil {
 		c.JSON(500, gin.H{"error": err.Error()})
 		return
 	}
 	c.JSON(200, gin.H{"message": "password changed"})
 }
 
-func (h *UserHandler) FindByID(c *gin.Context) {
+func (h *AccountHandler) FindByID(c *gin.Context) {
 	var req FindByIDRequest
 	if err := c.ShouldBindJSON(&req); err != nil {
 		c.JSON(400, gin.H{"error": err.Error()})
 		return
 	}
-	if user, err := h.userService.FindByID(req.ID); err != nil {
+	if account, err := h.accountService.FindByID(req.ID); err != nil {
 		c.JSON(500, gin.H{"error": err.Error()})
 		return
 	} else {
-		c.JSON(200, user)
+		c.JSON(200, account)
 	}
 }
 
-func (h *UserHandler) FindByUsername(c *gin.Context) {
+func (h *AccountHandler) FindByUsername(c *gin.Context) {
 	var req FindByUsernameRequest
 	if err := c.ShouldBindJSON(&req); err != nil {
 		c.JSON(400, gin.H{"error": err.Error()})
 		return
 	}
-	if user, err := h.userService.FindByUsername(req.Username); err != nil {
+	if account, err := h.accountService.FindByUsername(req.Username); err != nil {
 		c.JSON(500, gin.H{"error": err.Error()})
 		return
 	} else {
-		c.JSON(200, user)
+		c.JSON(200, account)
 	}
 }
 
-func (h *UserHandler) Login(c *gin.Context) {
+func (h *AccountHandler) Login(c *gin.Context) {
 	var req LoginRequest
 	if err := c.ShouldBindJSON(&req); err != nil {
 		c.JSON(400, gin.H{"error": err.Error()})
 		return
 	}
-	if token, err := h.userService.Login(req.Username, req.Password); err != nil {
+	if token, err := h.accountService.Login(req.Username, req.Password); err != nil {
 		c.JSON(500, gin.H{"error": err.Error()})
 		return
 	} else {
@@ -153,13 +153,13 @@ func (h *UserHandler) Login(c *gin.Context) {
 	}
 }
 
-func (h *UserHandler) Logout(c *gin.Context) {
+func (h *AccountHandler) Logout(c *gin.Context) {
 	var req LogoutRequest
 	if err := c.ShouldBindJSON(&req); err != nil {
 		c.JSON(400, gin.H{"error": err.Error()})
 		return
 	}
-	if err := h.userService.Logout(req.ID); err != nil {
+	if err := h.accountService.Logout(req.ID); err != nil {
 		c.JSON(500, gin.H{"error": err.Error()})
 		return
 	}
diff --git a/internal/http/router.go b/internal/http/router.go
index 29de74a..80dd157 100644
--- a/internal/http/router.go
+++ b/internal/http/router.go
@@ -11,26 +11,26 @@ import (
 func SetRouter(db *gorm.DB) *gin.Engine {
 	r := gin.Default()
 
-	userRepository := account.NewUserRepository(db)
-	userService := account.NewUserService(userRepository)
-	userHandler := NewUserHandler(userService)
-	userGroup := r.Group("/user")
+	accountRepository := account.NewAccountRepository(db)
+	accountService := account.NewAccountService(accountRepository)
+	accountHandler := NewAccountHandler(accountService)
+	accountGroup := r.Group("/account")
 	{
-		userGroup.POST("/register", userHandler.CreateUser)
-		userGroup.POST("/rename", userHandler.RenameByID)
-		userGroup.POST("/changePassword", userHandler.ChangePassword)
-		userGroup.POST("/findByID", userHandler.FindByID)
-		userGroup.POST("/findByUsername", userHandler.FindByUsername)
+		accountGroup.POST("/register", accountHandler.CreateAccount)
+		accountGroup.POST("/rename", accountHandler.RenameByID)
+		accountGroup.POST("/changePassword", accountHandler.ChangePassword)
+		accountGroup.POST("/findByID", accountHandler.FindByID)
+		accountGroup.POST("/findByUsername", accountHandler.FindByUsername)
 	}
 	authGroup := r.Group("/auth")
 	{
-		authGroup.POST("/login", userHandler.Login)
+		authGroup.POST("/login", accountHandler.Login)
 	}
 
 	protectedAuthGroup := authGroup.Group("")
 	protectedAuthGroup.Use(middleware.JWTAuth())
 	{
-		protectedAuthGroup.POST("/logout", userHandler.Logout)
+		protectedAuthGroup.POST("/logout", accountHandler.Logout)
 	}
 
 	return r
diff --git a/internal/middleware/jwt.go b/internal/middleware/jwt.go
index 8c5f81d..5869e2c 100644
--- a/internal/middleware/jwt.go
+++ b/internal/middleware/jwt.go
@@ -33,7 +33,7 @@ func JWTAuth() gin.HandlerFunc {
 			return
 		}
 
-		c.Set("userID", claims.UserID)
+		c.Set("accountID", claims.AccountID)
 		c.Set("username", claims.Username)
 
 		c.Next()