American spelling vs international organization

American spelling and international organization both are nouns.

Word	Noun	Adjective	Verb	Adverb
American spelling	Yes	No	No	No
international organization	Yes	No	No	No

American spelling (noun)	international organization (noun)
English orthography used in the United States (characterized by 'analyze', 'center', 'usable')	an international alliance involving many different countries