riot vs public violence

riot and public violence both are nouns.

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

As nouns, riot and public violence are synonyms defined as:

riot (noun)	public violence (noun)
a public act of violence by an unruly mob	a public act of violence by an unruly mob
a wild gathering involving excessive drinking and promiscuity
a joke that seems extremely funny
a state of disorder involving group violence

riot (verb)	public violence (verb)
take part in a riot; disturb the public peace by engaging in a riot
engage in boisterous, drunken merrymaking