neighbor vs doer

neighbor and doer both are nouns.

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

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

Other hypernyms of neighbor include actor, worker.

neighbor (noun)	doer (noun)
a nearby object of the same kind	a person who acts and gets things done
a person who lives (or is located) near another

neighbor (verb)	doer (verb)
be located near or adjacent to
live or be located as a neighbor