wig vs grizzle

wig and grizzle both are nouns.

Word	Noun	Adjective	Verb	Adverb
wig	Yes	No	No	No
grizzle	Yes	No	Yes	No

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

Other hyponyms of wig include horsehair wig, periwig, peruke, onkos, bagwig.

wig (noun)	grizzle (noun)
hairpiece covering the head and made of real or synthetic hair	a grey wig
British slang for a scolding

wig (verb)	grizzle (verb)
	complain whiningly
	be in a huff; be silent or sullen