leader vs doer

leader and doer both are nouns.

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

As nouns, doer is a hypernym of leader; that is, doer is a word with a broader meaning than leader:

Other hypernyms of leader include actor, worker.

leader (noun)	doer (noun)
a featured article of merchandise sold at a loss in order to draw customers	a person who acts and gets things done
a person who rules or guides or inspires others