Is irony just something humourous, or a description of a style of humour?
A contrast or an incongruity between what is stated and what is really meant, or between what is expected to happen and what actually does happen. Two kinds of irony are: 1) verbal irony, in which a writer or speaker says one thing and means something entirely different; and 2) dramatic irony in which a reader or audience member perceives something that a character in the story does not on the other hand, Humor (humour in British English) is the ability or quality of people, objects or situations to invoke feelings of amusement in other people. The term encompasses any form of entertainment or human communication which invokes such feelings, or which makes people laugh or feel happy.