Organization of Petroleum-Exporting Countries vs Angola

Organization of Petroleum-Exporting Countries and Angola both are nouns.

Word	Noun	Adjective	Verb	Adverb
Organization of Petroleum-Exporting Countries	Yes	No	No	No
Angola	Yes	No	No	No

Organization of Petroleum-Exporting Countries (noun)	Angola (noun)
an organization of countries formed in 1961 to agree on a common policy for the production and sale of petroleum	a republic in southwestern Africa on the Atlantic Ocean; achieved independence from Portugal in 1975 and was the scene of civil war until 1990