drug user vs actor

drug user and actor both are nouns.

Word	Noun	Adjective	Verb	Adverb
drug user	Yes	No	No	No
actor	Yes	No	No	No

As nouns, actor is a hypernym of drug user; that is, actor is a word with a broader meaning than drug user:

Other hypernyms of drug user include doer, worker.

drug user (noun)	actor (noun)
a person who takes drugs	a theatrical performer
	a person who acts and gets things done