nationalization vs American spelling

nationalization and American spelling both are nouns.

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

nationalization (noun)	American spelling (noun)
changing something from private to state ownership or control	English orthography used in the United States (characterized by 'analyze', 'center', 'usable')
the action of rendering national in character
the action of forming or becoming a nation