region vs Far East

region and Far East both are nouns.

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

region (noun)	Far East (noun)
a part of an animal that has a special function or is supplied by a given artery or nerve	a popular expression for the countries of eastern Asia (usually including China and Mongolia and Taiwan and Japan and Korea and Indochina and eastern Siberia)
a knowledge domain that you are interested in or are communicating about
the extended spatial location of something
a large indefinite location on the surface of the Earth
the approximate amount of something (usually used prepositionally as in `in the region of')