coffee break vs collation

coffee break and collation both are nouns.

Word	Noun	Adjective	Verb	Adverb
coffee break	Yes	No	No	No
collation	Yes	No	No	No

As nouns, collation is a hypernym of coffee break; that is, collation is a word with a broader meaning than coffee break:

Other hypernyms of coffee break include bite, snack.

coffee break (noun)	collation (noun)
a short break from work	careful examination and comparison to note points of disagreement
	assembling in proper numerical or logical sequence
	a light informal meal