Commonwealth of Dominica vs Organization of American States

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

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

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