barroom vs gin mill

barroom and gin mill both are nouns.

Word	Noun	Adjective	Verb	Adverb
barroom	Yes	No	No	No
gin mill	Yes	No	No	No

barroom (noun)	gin mill (noun)
a room or establishment where alcoholic drinks are served over a counter	tavern consisting of a building with a bar and public rooms; often provides light meals