laugh vs riot

laugh and riot both are nouns.

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

As nouns, riot is a hyponym of laugh; that is, riot is a word with a more specific, narrower meaning than laugh:

laugh (noun)	riot (noun)
the sound of laughing	a public act of violence by an unruly mob
a humorous anecdote or remark intended to provoke laughter	a wild gathering involving excessive drinking and promiscuity
a facial expression characteristic of a person laughing	a joke that seems extremely funny
	a state of disorder involving group violence

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