A ghost is an alleged non-corporeal manifestation of a dead person (or, rarely, an animal or a vehicle). It is often thought to be a manifestation of the spirit or soul of a person who has remained on Earth after death. According to some beliefs, a ghost may be the personality of a person after his or her death, and not directly tied to the soul or spirit. Every culture in the world carries stories about ghosts, though they often disagree as to what ghosts are and whether they are just figments of imagination or a part of reality.
Ghosts are often depicted of human size and shape (although some accounts also mention animal ghosts), but are typically described as “silvery”, “shadowy”, “semitransparent”, “misty”, “human-like”, “big”, “scary” or “fog-like”. Parapsychologists refer to the “substance” of which ghosts and other spirits are made as “ectoplasm”. Ghosts do not have a physical body like human beings, but only a subtle astral body. Sometimes they do not manifest themselves visually but in terms of other phenomena, such as the movements of an object, spontaneous throwing of a light switch, noises, etc., which supposedly have no natural explanation.