grizzle vs kvetch

grizzle and kvetch both are nouns.

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

As verbs, kvetch is a hypernym of grizzle; that is, kvetch is a word with a broader meaning than grizzle:

Other hypernyms of grizzle include complain, kick, plain, quetch, sound off.

grizzle (noun)	kvetch (noun)
a grey wig	(Yiddish) a nagging complaint
	(Yiddish) a constant complainer

grizzle (verb)	kvetch (verb)
complain whiningly	express complaints, discontent, displeasure, or unhappiness
be in a huff; be silent or sullen