diff --git a/models/word.ts b/models/word.ts
index d828e14..86e469e 100644
--- a/models/word.ts
+++ b/models/word.ts
@@ -18,4 +18,8 @@ export interface Word {
     similarWords?: Array<string>,
     oppositeWords?: Array<string>,
     grammaticalDetails: Array<gramaticalDetail>,
+}
+
+export interface MobileWord extends Word {
+    _id: string
 }
\ No newline at end of file