geographic area vs East

geographic area and East both are nouns.

Word	Noun	Adjective	Verb	Adverb
geographic area	Yes	No	No	No
East	Yes	No	No	No

geographic area (noun)	East (noun)
a demarcated area of the Earth	the countries of Asia
	the region of the United States lying to the north of the Ohio River and to the east of the Mississippi River