alehouse vs gin mill

alehouse and gin mill both are nouns.

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

As nouns, gin mill is a hypernym of alehouse; that is, gin mill is a word with a broader meaning than alehouse:

alehouse: a tavern where ale is sold
gin mill: tavern consisting of a building with a bar and public rooms; often provides light meals

Other hypernyms of alehouse include pothouse, pub, public house, saloon, taphouse.

alehouse (noun)	gin mill (noun)
a tavern where ale is sold	tavern consisting of a building with a bar and public rooms; often provides light meals