wit vs witticism

wit and witticism both are nouns.

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

As nouns, wit and witticism are synonyms defined as:

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

Other synonyms of wit include humor, humour, wittiness.

wit (noun)	witticism (noun)
mental ability	a message whose ingenuity or verbal skill or incongruity has the power to evoke laughter
a message whose ingenuity or verbal skill or incongruity has the power to evoke laughter
a witty amusing person who makes jokes