So when people in "the biz" talk about spirts they talk about all sorts, not least of which are Earthbound Spirits". Usually they speak of unfinished business or a strong connection which the deceased is reluctant to to break.The idea of a ghost being bound to this world as a form of punishment may seem very outdated but recent discussions about Tuatha de Danann (Irish Otherworld beings, Sí or Fairies) brought up some elements of mythology about Iron that had us joining dots.
(..... I need sleep so I'll come back and edit in more to this!)
