American spelling vs advertize

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

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

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

American spelling (verb)	advertize (verb)
	make publicity for; try to sell (a product)
	call attention to