surround vs geographical region

surround and geographical region both are nouns.

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

As nouns, geographical region is a hypernym of surround; that is, geographical region is a word with a broader meaning than surround:

Other hypernyms of surround include geographic area, geographic region, geographical area.

surround (noun)	geographical region (noun)
the area in which something exists or lives	a demarcated area of the Earth

surround (verb)	geographical region (verb)
surround so as to force to give up
surround with a wall in order to fortify
extend on all sides of simultaneously; encircle
envelop completely