territory vs possession

territory and possession both are nouns.

Word	Noun	Adjective	Verb	Adverb
territory	Yes	No	No	No
possession	Yes	No	No	No

As nouns, possession is a hyponym of territory; that is, possession is a word with a more specific, narrower meaning than territory:

territory (noun)	possession (noun)
an area of knowledge or interest	anything owned or possessed
a region marked off for administrative or other purposes	the act of having and controlling property
the geographical area under the jurisdiction of a sovereign state	(sport) the act of controlling the ball (or puck)
	the trait of resolutely controlling your own behavior
	a territory that is controlled by a ruling state
	a mania restricted to one thing or idea
	being controlled by passion or the supernatural