collation vs nosh

collation and nosh both are nouns.

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

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

Other hyponyms of collation include refreshment, coffee break, tea break.

collation (noun)	nosh (noun)
careful examination and comparison to note points of disagreement	(Yiddish) a snack or light meal
assembling in proper numerical or logical sequence
a light informal meal

collation (verb)	nosh (verb)
	eat a snack; eat lightly