Organization of Petroleum-Exporting Countries vs Katar

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

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

Organization of Petroleum-Exporting Countries (noun)	Katar (noun)
an organization of countries formed in 1961 to agree on a common policy for the production and sale of petroleum	an Arab country on the peninsula of Qatar; achieved independence from the United Kingdom in 1971; the economy is dominated by oil
	a peninsula extending northward from the Arabian mainland into the Persian Gulf