American spelling vs modernize

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

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

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

American spelling (verb)	modernize (verb)
	make repairs, renovations, revisions or adjustments to
	become technologically advanced