learner vs actor

learner and actor both are nouns.

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

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

learner: someone (especially a child) who learns (as from a teacher) or takes up knowledge or beliefs
actor: a person who acts and gets things done

Other hypernyms of learner include doer, worker.

learner (noun)	actor (noun)
someone (especially a child) who learns (as from a teacher) or takes up knowledge or beliefs	a theatrical performer
works for an expert to learn a trade	a person who acts and gets things done