American spelling vs civilize

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

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

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

American spelling (verb)	civilize (verb)
	raise from a barbaric to a civilized state
	teach or refine to be discriminative in taste or judgment