American spelling vs naturalize

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

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

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

American spelling (verb)	naturalize (verb)
	make into a citizen
	make more natural or lifelike
	adopt to another place
	adapt (a wild plant or unclaimed land) to the environment
	explain with reference to nature