Anger is a strong feeling of annoyance and displeasure, often accompanied by hostility. Its intensity can range from mild irritation to intense rage and fury.
Examples:
1. "I was angry with myself, because I ruined my favourite dress."
2. "To be angry is to revenge the faults of others upon ourselves." -Alexandra Pope

Anger is also a negative emotion. When you are angry your heart rate and blood pressure increase, as does the level of adrenalin, noradrenaline and your energy hormones. Some facial expressions used when angry are:

• the brows become drawn together and lower
• their lips will become set in a squarish shape, and pressed together firmly
• their eyes will become bulgy
• their nostrils will flare
• their upper and lower eyelids will tense