geographical area vs Gulf Coast of the United States

geographical area and Gulf Coast of the United States both are nouns.

Word	Noun	Adjective	Verb	Adverb
geographical area	Yes	No	No	No
Gulf Coast of the United States	Yes	No	No	No

geographical area (noun)	Gulf Coast of the United States (noun)
a demarcated area of the Earth	a region of the United States comprising states bordering the Gulf of Mexico; Alabama and Florida and Louisiana and Mississippi and Texas