Does the word "mad" mean "going crazy"? Or "being furious"?

Native speaker’s answer
Rebecca
In this context, the word "mad" refers to "being furious" or "angry". In a different context, it can mean "going crazy" or "insane". Ex: The birds outside were driving me mad. I couldn't focus. => Refers to the word "crazy". Ex: Oh no! You ruined mom's favourite cushion. She's going to be so mad. => Refers to the word "angry".