No, I do not. I do not because there is no conclusive evidence that anything paranormal is real. I am fascinated by the paranormal, but I do not believe in it per se. If convincing evidence comes along, I can definitely change my mind.
To me, a ghost is the “spirit” of a human being or other animal. A demon is an evil creature, it is not related to a human. Hence why the Amityville haunting was so especially terrifying. It wasn’t the ghost of a person trying to get to the other side that was haunting that Long Island house, it was a malevolent inhuman demonic force. At least, that’s how the story goes. :)