nonsmoker vs worker

nonsmoker and worker both are nouns.

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

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

Other hypernyms of nonsmoker include actor, doer.

nonsmoker (noun)	worker (noun)
a passenger car for passengers who want to avoid tobacco smoke	sterile member of a colony of social insects that forages for food and cares for the larvae
a person who does not smoke tobacco	a person who works at a specific occupation
	a member of the working class (not necessarily employed)
	a person who acts and gets things done