gnarl vs kvetch

gnarl and kvetch both are nouns.

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

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

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

gnarl (noun)	kvetch (noun)
something twisted and tight and swollen	(Yiddish) a nagging complaint
	(Yiddish) a constant complainer

gnarl (verb)	kvetch (verb)
make complaining remarks or noises under one's breath	express complaints, discontent, displeasure, or unhappiness
twist into a state of deformity