witticism vs message

witticism and message both are nouns.

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

As nouns, message is a hypernym of witticism; that is, message is a word with a broader meaning than witticism:

witticism: a message whose ingenuity or verbal skill or incongruity has the power to evoke laughter
message: content communicating a message; what something is about

Other hypernyms of witticism include content, subject matter, substance.

witticism (noun)	message (noun)
a message whose ingenuity or verbal skill or incongruity has the power to evoke laughter	content communicating a message; what something is about
	a communication (usually brief) that is written or spoken or signaled