possession vs possess

possession is a noun but possess is not a noun.

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

possession (noun)	possess (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

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