geographical region vs geographical area

geographical region and geographical area both are nouns.

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

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

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

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

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