diff --git a/ERD.md b/ERD.md
index 8f25eeb..ad53020 100644
--- a/ERD.md
+++ b/ERD.md
@@ -518,7 +518,7 @@ very systematically.
 ### `shopping_external_users`
 External user information.
 
-`shopping_external_users` is an entity dsigned for when this system needs 
+`shopping_external_users` is an entity designed for when this system needs 
 to connect with external services and welcome their users as customers of 
 this service.
 
@@ -654,7 +654,7 @@ do the [real-name authentication](#shopping_citizens), too.
   - `deleted_at`
     > Withdrawal time.
     > 
-    > It can be different with [shopping_members.deleted_at](#shopping_members).
+    > It can be different with [shopping_members.withdrawn_at](#shopping_members).
 
 ### `shopping_administrators`
 Administrator account.
@@ -679,7 +679,7 @@ do the [real-name authentication](#shopping_citizens), too.
     > Deletion time of record.
     > 
     > Withdrawal time from administrator, and can be different with
-    > [shopping_members.deleted_at](#shopping_members).
+    > [shopping_members.withdrawn_at](#shopping_members).
 
 ### `shopping_addresses`
 The address information.
@@ -857,7 +857,7 @@ the performance in each case.
     > The time when seller suspended the sale in some reason.
     > 
     > [Customers](#shopping_customers) can't see the sale in list and 
-    > detail page. It seems almost ssame with soft deletion, but there're 
+    > detail page. It seems almost same with soft deletion, but there're 
     > some differences. 
     > 
     > At 1st, seller and [administrator](#shopping_administrators) can
@@ -889,7 +889,7 @@ x | [shopping_carts](#shopping_carts) | [shopping_orders](#shopping_orders)
 Target channel of sale snapshot to sell.
 
 `shopping_sale_snapshot_channels` is an entity that expresses through 
-which [channel](#shopping_channels) a listing 
+which [channel](#shopping_channels) listing 
 [snapshot](#shopping_sale_snapshots) is sold, and is designed to 
 resolve the M:N relationship between two tables.
 
diff --git a/schema.prisma b/schema.prisma
index 503e631..57b338d 100644
--- a/schema.prisma
+++ b/schema.prisma
@@ -716,7 +716,7 @@ model shopping_customers {
 
 /// External user information.
 /// 
-/// `shopping_external_users` is an entity dsigned for when this system needs 
+/// `shopping_external_users` is an entity designed for when this system needs 
 /// to connect with external services and welcome their users as customers of 
 /// this service.
 /// 
@@ -1007,7 +1007,7 @@ model shopping_sellers {
 
     /// Withdrawal time.
     ///
-    /// It can be different with {@link shopping_members.deleted_at}.
+    /// It can be different with {@link shopping_members.withdrawn_at}.
     deleted_at DateTime? @db.Timestamptz
 
     //----
@@ -1057,7 +1057,7 @@ model shopping_administrators {
     /// Deletion time of record.
     ///
     /// Withdrawal time from administrator, and can be different with
-    /// {@link shopping_members.deleted_at}.
+    /// {@link shopping_members.withdrawn_at}.
     deleted_at DateTime? @db.Timestamptz
 
     //----
@@ -1197,7 +1197,7 @@ model shopping_sales {
     /// The time when seller suspended the sale in some reason.
     ///
     /// {@link shopping_customers Customers} can't see the sale in list and 
-    /// detail page. It seems almost ssame with soft deletion, but there're 
+    /// detail page. It seems almost same with soft deletion, but there're 
     /// some differences. 
     ///
     /// At 1st, seller and {@link shopping_administrators administrator} can
@@ -1366,7 +1366,7 @@ model shopping_sale_snapshot_tags {
 /// Target channel of sale snapshot to sell.
 /// 
 /// `shopping_sale_snapshot_channels` is an entity that expresses through 
-/// which {@link shopping_channels channel} a listing 
+/// which {@link shopping_channels channel} listing 
 /// {@link shopping_sale_snapshots snapshot} is sold, and is designed to 
 /// resolve the M:N relationship between two tables.
 ///