Gulf States vs geographical area

Gulf States and geographical area both are nouns.

Word	Noun	Adjective	Verb	Adverb
Gulf States	Yes	No	No	No
geographical area	Yes	No	No	No

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