Arab states of the Persian Gulf vs Republic of Iraq

Arab states of the Persian Gulf and Republic of Iraq both are nouns.

Word	Noun	Adjective	Verb	Adverb
Arab states of the Persian Gulf	Yes	No	No	No
Republic of Iraq	Yes	No	No	No

Arab states of the Persian Gulf (noun)	Republic of Iraq (noun)
the countries in southwestern Asia that border the Persian Gulf	a republic in the Middle East in western Asia; the ancient civilization of Mesopotamia was in the area now known as Iraq