irony vs wit

irony and wit both are nouns.

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

As nouns, wit is a hypernym of irony; that is, wit is a word with a broader meaning than irony:

irony: witty language used to convey insults or scorn
wit: a message whose ingenuity or verbal skill or incongruity has the power to evoke laughter

Other hypernyms of irony include humor, humour, witticism, wittiness.

irony (noun)	wit (noun)
incongruity between what might be expected and what actually occurs	mental ability
a trope that involves incongruity between what is expected and what occurs	a message whose ingenuity or verbal skill or incongruity has the power to evoke laughter
witty language used to convey insults or scorn	a witty amusing person who makes jokes