1. Verbal irony is when a person says or writes one thing and means another, or uses words to convey a meaning that is the opposite of the literal meaning.
It can sometimes seem like sarcasm, but it is not usually intended as such.
Verbal Irony: G1ySVsl4
Verbal Irony

2. Situational irony is when there is a difference between what is expected to happen and what actually happens.
The outcome must be contrary to what you would expect it to be.
Situational Irony: JBRbmNo&t=35s
Situational Irony

3. Dramatic irony is when the reader or audience has more information about what is happening than the character does.
In other words, you can see something that helps you predict the next event that is going to happen, while the character has no idea.
Dramatic Irony: MBVNa2sE
Dramatic Irony

10. Irony in The Crucible