A poltergeist is defined as a spirit/entity that is responsible for physical disturbances: knocking/banging, pushing/tripping, loud noises, thrown objects, possibly attacks, scratches, biting, hitting or moving objects. The word “poltergeist” originated from the German word “Poltern”(to make sound or noise/to rumble or knock) and “Geist”(ghost/spirit). Poltergeists have been present all throughout history dating as far back as the 1st century(the phenomena only becoming popular in the 1600s) in what is now the USA and most countries in Europe and Asia. Unlike what movies often imply poltergeists are not “evil”, but are very angry/violent entity that follows people dealing with problems or have negative thing surrounding them. Poltergeists absorb/feed on the emotions of an unhappy person which can help them to interact with the physical world, for the better or worse of the individual. Unlike ghosts, poltergeists are the manifestation of psychic disturbances that is surrounding an unhappy person. This makes their visibility different from a spirit because spirits are often deceased humans unable to leave due to unfinished business with the living and usually can chose to appear to someone; however poltergeists make their presence known by lashing out violently which could easily harm a person.