nosh vs eat

nosh is a noun but eat is not a noun.

Word	Noun	Adjective	Verb	Adverb
nosh	Yes	No	Yes	No
eat	No	No	Yes	No

As verbs, eat is a hypernym of nosh; that is, eat is a word with a broader meaning than nosh:

nosh (noun)	eat (noun)
(Yiddish) a snack or light meal

nosh (verb)	eat (verb)
eat a snack; eat lightly	cause to deteriorate due to the action of water, air, or an acid
	take in solid food
	eat a meal; take a meal
	take in food; used of animals only
	use up (resources or materials)
	worry or cause anxiety in a persistent way