Mostly everyone thinks about ghosts when darkness falls, Halloween has come to be the scariest night, and children believe that all the haunting ghosts come out on the night of Halloween.
However, we get scared all the time with the hauntings ghost stories seen in movies, songs, or by our imaginations. We are haunted by food, people, memories, somebody from our past and present, and we try to run away from them.
Sometimes if we have terrible nightmares, we are haunted by it, and we try to change from that experience.
Ghosts are almost always a metaphor in literature as they carry the weight of the past, and they are not there in the traditional sense.