laugh vs wittiness

laugh and wittiness both are nouns.

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

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

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

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

laugh (noun)	wittiness (noun)
the sound of laughing	The quality of being clever, amusingly ingenious.
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

laugh (verb)	wittiness (verb)
produce laughter