Wikipedia says:
In folklore and parapsychology, a poltergeist is a type of ghost or other supernatural being supposedly responsible for physical disturbances such as loud noises and objects moved around or destroyed. Most accounts of poltergeists describe movement or levitation of objects, such as furniture and cutlery, or noises such as knocking on doors. Poltergeists have also been claimed to be capable of pinching, biting, hitting and tripping people.
Poltergeists occupy numerous niches...
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