territory vs geographical area

territory and geographical area both are nouns.

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

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

territory: the geographical area under the jurisdiction of a sovereign state
geographical area: a demarcated area of the Earth

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

territory (noun)	geographical area (noun)
an area of knowledge or interest	a demarcated area of the Earth
a region marked off for administrative or other purposes
the geographical area under the jurisdiction of a sovereign state