riot vs scream

riot and scream both are nouns.

Word	Noun	Adjective	Verb	Adverb
riot	Yes	No	Yes	No
scream	Yes	No	Yes	No

As nouns, riot and scream are synonyms defined as:

Other synonyms of riot include belly laugh, howler, sidesplitter, thigh-slapper, wow.

riot (noun)	scream (noun)
a public act of violence by an unruly mob	sharp piercing cry
a wild gathering involving excessive drinking and promiscuity	a joke that seems extremely funny
a joke that seems extremely funny	a high-pitched noise resembling a human cry
a state of disorder involving group violence

riot (verb)	scream (verb)
take part in a riot; disturb the public peace by engaging in a riot	utter a sudden loud cry
engage in boisterous, drunken merrymaking	utter or declare in a very loud voice
	make a loud, piercing sound