laugh vs wit

laugh and wit both are nouns.

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

As nouns, wit is a hypernym of laugh; that is, wit is a word with a broader meaning than laugh:

laugh: a humorous anecdote or remark intended to provoke laughter
wit: a message whose ingenuity or verbal skill or incongruity has the power to evoke laughter

Other hypernyms of laugh include humor, humour, witticism, wittiness.

laugh (noun)	wit (noun)
the sound of laughing	mental ability
a humorous anecdote or remark intended to provoke laughter	a message whose ingenuity or verbal skill or incongruity has the power to evoke laughter
a facial expression characteristic of a person laughing	a witty amusing person who makes jokes

laugh (verb)	wit (verb)
produce laughter