wittiness vs laugh

wittiness and laugh both are nouns.

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

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

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

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

wittiness (verb)	laugh (verb)
	produce laughter