meal vs collation

meal and collation both are nouns.

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

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

meal (noun)	collation (noun)
the food served and eaten at one time	careful examination and comparison to note points of disagreement
coarsely ground foodstuff; especially seeds of various cereal grasses or pulse	assembling in proper numerical or logical sequence
any of the occasions for eating food that occur by custom or habit at more or less fixed times	a light informal meal