geographical region vs Turkistan

geographical region and Turkistan both are nouns.

Word	Noun	Adjective	Verb	Adverb
geographical region	Yes	No	No	No
Turkistan	Yes	No	No	No

geographical region (noun)	Turkistan (noun)
a demarcated area of the Earth	a historical region of central Asia that was a center for trade between the East and the West