categorise vs sort

categorise is not a noun while sort is a noun.

Word	Noun	Adjective	Verb	Adverb
categorise	No	No	Yes	No
sort	Yes	No	Yes	No

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

Other hyponyms of categorise include assort, class, classify, separate, sort out.

categorise (noun)	sort (noun)
	an approximate definition or example
	a category of things distinguished by some common characteristic or quality
	a person of a particular character or nature
	an operation that segregates items into groups according to a specified criterion

categorise (verb)	sort (verb)
place into or assign to a category	arrange or order by classes or categories
	examine in order to test suitability