Rathskeller and Speakeasy

Rathskeller noun - A tavern below street level featuring beer; originally a German restaurant in the basement of city hall.

Speakeasy and rathskeller are semantically related. In some cases you can use "Speakeasy" instead a noun "Rathskeller".

Speakeasy noun - (during prohibition) an illegal barroom.

Rathskeller and speakeasy are semantically related. Sometimes you can use "Rathskeller" instead a noun "Speakeasy".