nonsmoker vs doer

nonsmoker and doer both are nouns.

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

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

Other hypernyms of nonsmoker include actor, worker.

nonsmoker (noun)	doer (noun)
a passenger car for passengers who want to avoid tobacco smoke	a person who acts and gets things done
a person who does not smoke tobacco