catalog vs classify

catalog is a noun but classify is not a noun.

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

As verbs, classify is a hypernym of catalog; that is, classify is a word with a broader meaning than catalog:

Other hypernyms of catalog include assort, class, separate, sort, sort out.

catalog (noun)	classify (noun)
a book or pamphlet containing an enumeration of things
a complete list of things; usually arranged systematically

catalog (verb)	classify (verb)
make an itemized list or catalog of; classify	arrange or order by classes or categories
make a catalogue, compile a catalogue	assign to a class or kind
	declare unavailable, as for security reasons