blackface vs make-up

blackface and make-up both are nouns.

Word	Noun	Adjective	Verb	Adverb
blackface	Yes	No	No	No
make-up	Yes	No	No	No

As nouns, make-up is a hypernym of blackface; that is, make-up is a word with a broader meaning than blackface:

blackface: the makeup (usually burnt cork) used by a performer in order to imitate a Negro
make-up: cosmetics applied to the face to improve or change your appearance

Other hypernyms of blackface include makeup, war paint.

blackface (noun)	make-up (noun)
the makeup (usually burnt cork) used by a performer in order to imitate a Negro	cosmetics applied to the face to improve or change your appearance
	the way in which someone or something is composed
	an event that is substituted for a previously cancelled event