mestizo vs doer

mestizo and doer both are nouns.

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

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

mestizo: a person of mixed racial ancestry (especially mixed European and Native American ancestry)
doer: a person who acts and gets things done

Other hypernyms of mestizo include actor, worker.

mestizo (noun)	doer (noun)
a person of mixed racial ancestry (especially mixed European and Native American ancestry)	a person who acts and gets things done