classifier vs classify

classifier is a noun but classify is not a noun.

Word	Noun	Adjective	Verb	Adverb
classifier	Yes	No	No	No
classify	No	No	Yes	No

classifier (noun)	classify (noun)
an algorithm that implements classification.
a word or morpheme used in some languages in certain contexts (such as counting) to indicate the semantic class to which the counted item belongs
a person who creates classifications

classifier (verb)	classify (verb)
	arrange or order by classes or categories
	assign to a class or kind
	declare unavailable, as for security reasons