Arab states of the Persian Gulf vs geographical region

Arab states of the Persian Gulf and geographical region both are nouns.

Word	Noun	Adjective	Verb	Adverb
Arab states of the Persian Gulf	Yes	No	No	No
geographical region	Yes	No	No	No

Arab states of the Persian Gulf (noun)	geographical region (noun)
the countries in southwestern Asia that border the Persian Gulf	a demarcated area of the Earth