360 defenses are also called outside defenses. However, there are other types of outside defenses, depending on the context. For example, 360s are used typically with the attacker in front of you, and the attacks are coming from outside in. For the other outside defenses, these are typically from straight attacks (i.e. straight punches), and used when your arms are not in an optimum position (e.g. when your arm is down), or when your body is not in an optimum position (e.g. when the attack comes from the side of you).