Yiddish vs kvetch

Yiddish and kvetch both are nouns.

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

Yiddish (noun)	kvetch (noun)
a dialect of High German including some Hebrew and other words; spoken in Europe as a vernacular by many Jews; written in the Hebrew script	(Yiddish) a nagging complaint
	(Yiddish) a constant complainer

Yiddish (verb)	kvetch (verb)
	express complaints, discontent, displeasure, or unhappiness