Republic of Indonesia vs Organization of Petroleum-Exporting Countries

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

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

Republic of Indonesia (noun)	Organization of Petroleum-Exporting Countries (noun)
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	an organization of countries formed in 1961 to agree on a common policy for the production and sale of petroleum