false hair vs Afro-wig

false hair and Afro-wig both are nouns.

Word	Noun	Adjective	Verb	Adverb
false hair	Yes	No	No	No
Afro-wig	Yes	No	No	No

As nouns, Afro-wig is a hyponym of false hair; that is, Afro-wig is a word with a more specific, narrower meaning than false hair:

false hair: a covering or bunch of human or artificial hair used for disguise or adornment
Afro-wig: a wig that gives the appearance of an Afro hairdo

Other hyponyms of false hair include switch, toupe, toupee, wig.

false hair (noun)	Afro-wig (noun)
a covering or bunch of human or artificial hair used for disguise or adornment	a wig that gives the appearance of an Afro hairdo