The difference between irony and sarcasm!!!

یعنی شاهکاره که بچه ها برای تفاوت این دو تا من رو مثال می زنن به این شکل

Irony:

To the class: Do you see what I see?  Is Nataniel really present? Or is my wistful longing to have him in the class messing with my head? 

Sarcasm:

Daniel!!!! Start working!

I'm doing something!

What exactly?

Something!

Sorry! I didn't notice you were busy digesting your lunch!!!

و البته که

I'm so proud! FYI, that was irony!