Poltergeist

A Poltergeist is an unseen ghost which moves things and makes noises, and may make things hover in the air.  These physical disturbances are typically tied to a person rather than a place, and in extreme cases may go beyond telekinesis and levitation to actual malicious physical contact with the victim, such as tripping or biting them.

In Northern England such a noisy ghost could be described as a boggart, and in a Cornish mine it would be a knocker, but the imported German word has spread in English as it uniquely describes a precise phenomenon with no other known name or translation in English.  Whether there are more or noisier ghosts in German-speaking lands is a topic for paranormal investigators; perhaps Germans just listened more to ghosts.