classificatory vs classification

classificatory is not a noun while classification is a noun.

Word	Noun	Adjective	Verb	Adverb
classificatory	No	Yes	No	No
classification	Yes	No	No	No

classificatory (noun)	classification (noun)
	the act of distributing things into classes or categories of the same type
	restriction imposed by the government on documents or weapons that are available only to certain authorized people
	the basic cognitive process of arranging into classes or categories
	a group of people or things arranged by class or category

classificatory (adjective)	classification (adjective)
relating to or involving classification