characterisation vs characterise

characterisation is a noun but characterise is not a noun.

Word	Noun	Adjective	Verb	Adverb
characterisation	Yes	No	No	No
characterise	No	No	Yes	No

characterisation (noun)	characterise (noun)
a graphic or vivid verbal description
the act of describing distinctive characteristics or essential features

characterisation (verb)	characterise (verb)
	describe or portray the character or the qualities or peculiarities of
	be characteristic of