possess vs possession

possess is not a noun while possession is a noun.

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

possess (noun)	possession (noun)
	anything owned or possessed
	the act of having and controlling property
	(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

possess (verb)	possession (verb)
have ownership or possession of
have as an attribute, knowledge, or skill
enter into and control, as of emotions or ideas