comparing vs collation

comparing and collation both are nouns.

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

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

comparing: the act of examining resemblances
collation: careful examination and comparison to note points of disagreement

Other hyponyms of comparing include likening, analogy, confrontation, contrast.

comparing (noun)	collation (noun)
the act of examining resemblances	careful examination and comparison to note points of disagreement
	assembling in proper numerical or logical sequence
	a light informal meal