What makes horror movies scary?

Come on. When you watch Ghost movie or Adventure movie or Killing movie, you will fear a lot. Especially you watch Ghost video, you can not sleep alone. And will really scary. But please note that almost Ghost movies are not real. Almost ghost director are want to make people to scary, fear and afraid. After they made a very scary ghost movie, they get money from people. So they are happy and they make a ghost movie again and again.

Do not worry about Ghost movie.