geographic region vs Colchis

geographic region and Colchis both are nouns.

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

geographic region (noun)	Colchis (noun)
a demarcated area of the Earth	(Greek mythology) a region on the Black Sea to the south of the Caucasus that was the site of an ancient country where (according to Greek mythology) Jason sought the Golden Fleece