repartee vs wittiness

repartee and wittiness both are nouns.

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

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

repartee: adroitness and cleverness in reply
wittiness: a message whose ingenuity or verbal skill or incongruity has the power to evoke laughter

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

repartee (noun)	wittiness (noun)
adroitness and cleverness in reply	The quality of being clever, amusingly ingenious.
	a message whose ingenuity or verbal skill or incongruity has the power to evoke laughter