laugh vs witticism

laugh and witticism both are nouns.

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

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

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

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

laugh (noun)	witticism (noun)
the sound of laughing	a message whose ingenuity or verbal skill or incongruity has the power to evoke laughter
a humorous anecdote or remark intended to provoke laughter
a facial expression characteristic of a person laughing

laugh (verb)	witticism (verb)
produce laughter