violence vs ferocity

violence and ferocity both are nouns.

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

As nouns, violence and ferocity are synonyms defined as:

Other synonyms of violence include fierceness, furiousness, fury, vehemence, wildness.

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