Bank bill and Twenty dollar bill

Bank bill noun - A piece of paper money (especially one issued by a central bank).

Twenty dollar bill and bank bill are semantically related. In some cases you can replace phrase "Twenty dollar bill" with "Bank bill", this phrases are similar.

Twenty dollar bill noun - A United States bill worth 20 dollars.

Bank bill and twenty dollar bill are semantically related. You can use "Bank bill" instead a noun phrase "Twenty dollar bill".