characterize vs characterization

characterize is not a noun while characterization is a noun.

Word	Noun	Adjective	Verb	Adverb
characterize	No	No	Yes	No
characterization	Yes	No	No	No

characterize (noun)	characterization (noun)
	acting the part of a character on stage; dramatically representing the character by speech and action and gesture
	a graphic or vivid verbal description
	the act of describing distinctive characteristics or essential features

characterize (verb)	characterization (verb)
describe or portray the character or the qualities or peculiarities of
be characteristic of