geographical area vs geographical region

geographical area and geographical region both are nouns.

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

As nouns, geographical area and geographical region are synonyms defined as:

geographical area and geographical region: a demarcated area of the Earth

Other synonyms of geographical area include geographic area, geographic region.

geographical area (noun)	geographical region (noun)
a demarcated area of the Earth	a demarcated area of the Earth