Americanize vs American spelling

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

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

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

Americanize (verb)	American spelling (verb)
become American in character
make American in character