Greetings Haunty, to answer your question I would have to say to distinquish horrific creatures from monsters is all in appearance. Monsters are often given titles such as vampires, werewolves, zombies, mummies, aliens and remade in that image. Horrific creatures however manifest into disturbing images that sometimes the human mind could never percept, born out of the brink of insanity and extreme creativity. Appearances to make you grow ill, sick make you want to turn away in fear or disgust, well that is my answer. Ok claresse, hello claresse, HHHHmm, AAARRRRR, UUHHHHH, excuse me I mean ok Haunty that should suffice.