alehouse vs saloon

alehouse and saloon both are nouns.

Word	Noun	Adjective	Verb	Adverb
alehouse	Yes	No	No	No
saloon	Yes	No	No	No

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

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

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

alehouse (noun)	saloon (noun)
a tavern where ale is sold	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
	a car that is closed and that has front and rear seats and two or four doors