collation vs comparing

collation and comparing both are nouns.

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

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

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

Other hypernyms of collation include comparison.

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