Poltergeist

Poltergeist  (from German poltern and Geist, "noisy ghost", "spirit", or "embodiment") is a term used to describe a supposed spirit or ghost that manifests itself by moving and influencing objects.

Reports of poltergeist activity typically feature raps, bumps, thumps, knocks, footsteps, and bed shaking, all without a discernible point of origin or physical reason for occurrence. Many accounts also report objects being thrown about the room, furniture being moved, and even people being levitated. Though rare, a few reported poltergeists have been purported to speak, including the The Bell Witch in 1817 and Gef the Talking Mongoose in 1931.