beer drinker vs ale drinker

beer drinker and ale drinker both are nouns.

Word	Noun	Adjective	Verb	Adverb
beer drinker	Yes	No	No	No
ale drinker	Yes	No	No	No

As nouns, beer drinker and ale drinker are synonyms defined as:

beer drinker and ale drinker: someone whose favorite drink is beer or ale

beer drinker (noun)	ale drinker (noun)
someone whose favorite drink is beer or ale	someone whose favorite drink is beer or ale