user vs actor

user and actor both are nouns.

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

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

user: a person who makes use of a thing; someone who uses or employs something
actor: a person who acts and gets things done

Other hypernyms of user include doer, worker.

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

Other hypernyms of user include doer, worker.

user (noun)	actor (noun)
a person who makes use of a thing; someone who uses or employs something	a theatrical performer
a person who uses something or someone selfishly or unethically	a person who acts and gets things done
a person who takes drugs