closer vs doer

closer and doer both are nouns.

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

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

Other hypernyms of closer include actor, worker.

closer (noun)	doer (noun)
(baseball) a relief pitcher who can protect a lead in the last inning or two of the game	a person who acts and gets things done
a person who closes something

closer (adverb)	doer (adverb)
(comparative of `near' or `close') within a shorter distance