itemize vs American spelling

itemize is not a noun while American spelling is a noun.

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

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

itemize (verb)	American spelling (verb)
specify individually
place on a list of items