hairpiece vs Afro-wig

hairpiece and Afro-wig both are nouns.

Word	Noun	Adjective	Verb	Adverb
hairpiece	Yes	No	No	No
Afro-wig	Yes	No	No	No

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

hairpiece: 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 hairpiece include switch, toupe, toupee, wig.

hairpiece (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