keeping vs possession

keeping and possession both are nouns.

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

As nouns, possession is a hypernym of keeping; that is, possession is a word with a broader meaning than keeping:

Other hypernyms of keeping include ownership.

keeping (noun)	possession (noun)
the responsibility of a guardian or keeper	anything owned or possessed
conformity or harmony	the act of having and controlling property
the act of retaining something	(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