witticism vs wittiness

witticism and wittiness both are nouns.

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

As nouns, witticism and wittiness are synonyms defined as:

witticism and wittiness: a message whose ingenuity or verbal skill or incongruity has the power to evoke laughter

Other synonyms of witticism include humor, humour, wit.

witticism (noun)	wittiness (noun)
a message whose ingenuity or verbal skill or incongruity has the power to evoke laughter	The quality of being clever, amusingly ingenious.
	a message whose ingenuity or verbal skill or incongruity has the power to evoke laughter