American spelling vs internationalization

American spelling and internationalization both are nouns.

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

American spelling (noun)	internationalization (noun)
English orthography used in the United States (characterized by 'analyze', 'center', 'usable')	the act of bringing something under international control