East vs geographic region

East and geographic region both are nouns.

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

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