Fertile Crescent vs geographical region

Fertile Crescent and geographical region both are nouns.

Word	Noun	Adjective	Verb	Adverb
Fertile Crescent	Yes	No	No	No
geographical region	Yes	No	No	No

Fertile Crescent (noun)	geographical region (noun)
a geographical area of fertile land in the Middle East stretching in a broad semicircle from the Nile to the Tigris and Euphrates	a demarcated area of the Earth