nondrinker vs doer

nondrinker and doer both are nouns.

Word	Noun	Adjective	Verb	Adverb
nondrinker	Yes	No	No	No
doer	Yes	No	No	No

As nouns, doer is a hypernym of nondrinker; that is, doer is a word with a broader meaning than nondrinker:

Other hypernyms of nondrinker include actor, worker.

nondrinker (noun)	doer (noun)
a person who refrains from drinking intoxicating beverages	a person who acts and gets things done