It can be physical aggression... Bullying happens in many cases, through physical damage, formal acts that physically hurt, such as: kicking, pushing, playing, etc.

But it can also be verbal... There are attitudes that hurt as much as they are verbal: as calls of aggression This consists of threatening or intimidating someone; humiliate for any reason; delete; discriminate by color, race or sex; Evil without reason, &c. Verbal assaults are more common than talking about the subject, and at school they occur quite frequently. In some cases, victims feel embarrassed or insecure about reporting