Gulf States vs Arab states of the Persian Gulf

Gulf States and Arab states of the Persian Gulf both are nouns.

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

As nouns, Gulf States and Arab states of the Persian Gulf are synonyms defined as:

Gulf States and Arab states of the Persian Gulf: the countries in southwestern Asia that border the Persian Gulf

Gulf States (noun)	Arab states of the Persian Gulf (noun)
a region of the United States comprising states bordering the Gulf of Mexico; Alabama and Florida and Louisiana and Mississippi and Texas	the countries in southwestern Asia that border the Persian Gulf
the countries in southwestern Asia that border the Persian Gulf