Black person vs doer

Black person and doer both are nouns.

Word	Noun	Adjective	Verb	Adverb
Black person	Yes	No	No	No
doer	Yes	No	No	No

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

Black person: a person with dark skin who comes from Africa (or whose ancestors came from Africa)
doer: a person who acts and gets things done

Other hypernyms of Black person include actor, worker.

Black person (noun)	doer (noun)
a person with dark skin who comes from Africa (or whose ancestors came from Africa)	a person who acts and gets things done