The Devil (from Greek diabolos, "slanderer" or "accuser") is the spirit or power of evil. Though sometimes used for minor demonic spirits, the word "devil" generally refers to the prince of evil spirits and, as such, takes various forms in the religions of the world. The Devil has been a constant figure in religious folklore since the beginning of Christianity. He is often depicted as a red-horned beast with cloven feet and a tail. Although he can take many forms, he is usually identifiable by his actions: temptation of Christ, persecution of Christians, involvement in wars, etc. In modern usage, the term "devil" is often used interchangeably with "demon". However, the two are not synonymous; a devil is any subordinate demon while a demon is an evil spirit who seeks to harm humans. Only those who have been contacted by a devil will say they have been visited by a "demon", because only those people receive messages from demons. Demons can be identified by their names: Azazel, Asmodai, Belial, Baphomet, etc. A devil's main goal is to lead humans into sin. Therefore, when someone says that something is done in the name of the Devil or uses phrases like "the Devil made me do it" or "the Devil told me to do it", they are referring to immoral acts.