dupe vs doer

dupe and doer both are nouns.

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

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

Other hypernyms of dupe include actor, worker.

dupe (noun)	doer (noun)
a person who is tricked or swindled	a person who acts and gets things done

dupe (verb)	doer (verb)
fool or hoax