Organization of Petroleum-Exporting Countries vs Republic of Indonesia

Organization of Petroleum-Exporting Countries and Republic of Indonesia both are nouns.

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

Organization of Petroleum-Exporting Countries (noun)	Republic of Indonesia (noun)
an organization of countries formed in 1961 to agree on a common policy for the production and sale of petroleum	a republic in southeastern Asia on an archipelago including more than 13,000 islands; achieved independence from the Netherlands in 1945; the principal oil producer in the Far East and Pacific regions