public violence vs violence

public violence and violence both are nouns.

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

As nouns, violence is a hypernym of public violence; that is, violence is a word with a broader meaning than public violence:

Other hypernyms of public violence include force.

public violence (noun)	violence (noun)
a public act of violence by an unruly mob	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.