hot spot vs geographical region

hot spot and geographical region both are nouns.

Word	Noun	Adjective	Verb	Adverb
hot spot	Yes	No	No	No
geographical region	Yes	No	No	No

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

Other hypernyms of hot spot include geographic area, geographic region, geographical area.

hot spot (noun)	geographical region (noun)
a lively entertainment spot	a demarcated area of the Earth
a point of relatively intense heat or radiation
a place of political unrest and potential violence