willpower vs possession

willpower and possession both are nouns.

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

As nouns, willpower and possession are synonyms defined as:

willpower and possession: the trait of resolutely controlling your own behavior

Other synonyms of willpower include self-command, self-control, self-possession, self-will, will power.

willpower (noun)	possession (noun)
the trait of resolutely controlling your own behavior	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