How can you tell a story between a thriller and a horror? To me, horror are like thrillers except they have supernatural entities to add scary conflict among the characters. And thrillers deal with suspense and fear without the supernatural. I thought most stories that have psychopathic killers are usually in thriller stories, but people dubbed them to be horror. If a story is about a killer, how can it be a horror story if it doesn't have any supernatural elements? And isn't both of these genres are about fear and suspense?