Talk:Poltergeist

Souls or spirits?
I'm confused, in the Buffyverse, is a poltergiest a ghost (soul of a deceased person) with the ability to control their surroundings like in "Rm w/a Vu" and "I Only Have Eyes For You" or are they just manifestations (not the soul of the person) of intense emotions like in "Where the Wild Things Are"? It's hard to define since some episodes give one definition while another episode written by another writer says differently. How can these be combined so a valid conclusion can be made,