learner vs doer

learner and doer both are nouns.

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

As nouns, doer is a hypernym of learner; that is, doer 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
doer: a person who acts and gets things done

Other hypernyms of learner include actor, worker.

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