American spelling vs popularize

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

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

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

American spelling (verb)	popularize (verb)
	make understandable to the general public
	cater to popular taste to make popular and present to the general public; bring into general or common use