American spelling vs characterize

American spelling is a noun but characterize is not a noun.

Word	Noun	Adjective	Verb	Adverb
American spelling	Yes	No	No	No
characterize	No	No	Yes	No

American spelling (noun)	characterize (noun)
English orthography used in the United States (characterized by 'analyze', 'center', 'usable')

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