hairpiece vs toupe

hairpiece and toupe both are nouns.

Word	Noun	Adjective	Verb	Adverb
hairpiece	Yes	No	No	No
toupe	Yes	No	No	No

As nouns, toupe is a hyponym of hairpiece; that is, toupe 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
toupe: a small hairpiece to cover partial baldness

Other hyponyms of hairpiece include Afro-wig, switch, toupee, wig.

hairpiece (noun)	toupe (noun)
a covering or bunch of human or artificial hair used for disguise or adornment	a small hairpiece to cover partial baldness