A djinn is a certain type of spirit in Islam, similar to an angel. Many Muslims believe that a djinn can take the form of an animal or a human.
Muslim mythology includes angels and also the spirits known as djinns or jinns, which are described in the Qur'an as being able to interact with people despite being made of a "smokeless fire." Djinns are known for having free will, and for being either good or evil, like humans. The word djinn comes from the Arabic jinn, a plural noun that means both "demons or spirits" and also, literally, "hidden from sight." The word genie shares the same Arabic root.