Black person vs worker

Black person and worker both are nouns.

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

As nouns, worker is a hypernym of Black person; that is, worker 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)
worker: a person who acts and gets things done

Other hypernyms of Black person include actor, doer.

Black person (noun)	worker (noun)
a person with dark skin who comes from Africa (or whose ancestors came from Africa)	sterile member of a colony of social insects that forages for food and cares for the larvae
	a person who works at a specific occupation
	a member of the working class (not necessarily employed)
	a person who acts and gets things done