violence vs violent

violence is a noun but violent is not a noun.

Word	Noun	Adjective	Verb	Adverb
violence	Yes	No	No	No
violent	No	Yes	No	No

violence (noun)	violent (noun)
an act of aggression (as one against a person who resists)
the property of being wild or turbulent
a turbulent state resulting in injuries and destruction etc.

violence (adjective)	violent (adjective)
	acting with or marked by or resulting from great force or energy or emotional intensity
	characterized by violence or bloodshed
	effected by force or injury rather than natural causes
	marked by extreme intensity of emotions or convictions; inclined to react violently; fervid
	(of colors or sounds) intensely vivid or loud