world organization vs American spelling

world organization and American spelling both are nouns.

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

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