Question

What is the difference between sarcasm and irony?

Answer 1

Sarcasm and irony are slightly different.
Sarcasm is a type of humor that is meant to be a witty remark or retort. Sarcasm is the use of irony to mock a concept or convey contempt.
Irony is a type of humor that uses the unexpected and unlikely to form a joke.

Answer 2

Basically, sarcasm and irony are the same thing. They both mean the exact opposite of what they REALLY are saying. So what is the difference?
Irony can naturally occur in both language and circumstance; one experiences irony when something the exact opposite of what was was expected happens.
Sarcasm can make use of irony to make an observation or remark about an idea, person or situation. Sarcasm is generally used to express riducle or reservation of an expression or idea.
Hope this helps! (: