Organization of American States vs Commonwealth of Dominica

Organization of American States and Commonwealth of Dominica both are nouns.

Word	Noun	Adjective	Verb	Adverb
Organization of American States	Yes	No	No	No
Commonwealth of Dominica	Yes	No	No	No

Organization of American States (noun)	Commonwealth of Dominica (noun)
an association including most countries in the western hemisphere; created in 1948 to promote military and economic and social and cultural cooperation	a country on the island of Dominica