This is a large topic and I can't cover everything about it in one post. But I'll make a start. Firstly, what is anger? Well, it is an emotion. It's a feeling. Next, what is is not. It is not a behaviour or action. Often when we say someone is angry, we are referring to someone raging, shouting or even being violent. These are behaviours. They might arise from anger, but they are not synonymous with anger. It is entirely possible to feel anger and not show any behaviour at all.