colligation vs unification

colligation and unification both are nouns.

Word	Noun	Adjective	Verb	Adverb
colligation	Yes	No	No	No
unification	Yes	No	No	No

As nouns, unification is a hypernym of colligation; that is, unification is a word with a broader meaning than colligation:

Other hypernyms of colligation include union.

colligation (noun)	unification (noun)
the connection of isolated facts by a general hypothesis	the act of making or becoming a single unit
the state of being joined together	an occurrence that involves the production of a union
	the state of being joined or united or linked