categorize vs classify

categorize and classify both are verbs.

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

As verbs, classify is a hyponym of categorize; that is, classify is a word with a more specific, narrower meaning than categorize:

Other hyponyms of categorize include assort, class, separate, sort, sort out.

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