what is sarcasm?
what is irony?
what is postirany?
на английском написать ​

Ответ:

Irony-Covert mockery; using a word or expression in the opposite sense of the literal

Sarcasm-Sarcism is one of the types of satirical exposure, stinging mockery, the highest degree of irony.

Potirany-a satirical technique in which sincerity becomes difficult to distinguish from irony.