I am an American. I found the word in a dictionary, so my guess would be that it is the correct spelling. I guess it could be different in another English country. About the pictures on my web site, I've never really said they were ghosts. They just look like other photos from Gettysburg that people say are ghosts. By the way, if anybody does not know, Gettysburg is the place where a battle of the US Civil War took place. Thousands of people were killed there in just a few days. Anyway, on my web site, I tried to be careful not to call the pictures "ghost pictures". Instead I try to call them "ghost-like figures" or I say "they appear to be ghosts". I actually have no idea what they are. I've never taken any photos like these before I went to Gettysburg. That is why I am asking about them on a couple forums. Many people on a Christian forum say that they are demons. The people on the science forum say that it is most likely something else. I am trying to get several opinions about this, and maybe I can figure out what they really are. I have been carefully reading and thinking about each reply on this forum. I want to thank everyone very much who took the time to reply. However, nobody agrees on one explanation. I haven't read an explanation that I am completely satisfied with. The demon concept seems to make more sense than a camera error. Why would I get ghost-like pictures in Gettysburg, but not in other places? Also, why do other people get similar ghost-like photos at Gettysburg?