Horror sub-genres.

I was interested to know whether there was different types of horror movies or if they all came under one specific genre. I got all my research off Wiki.

From researching this, I now know that there are different types of horror movies. There's:

Slasher horror -

type of horror film typically involving a psychopathic killer stalking and killing a sequence of victims in a graphically violent manner, often with a cutting tool such as a knife or axe. Although the term "slasher" may be used as a generic term for any horror movie involving graphic acts of murder, the slasher as a genre has its own set of characteristics which set it apart from related genres like the splatter film.

Stalker horror (often overlaps with Slasher horror)  

Psychological horror/Suspense - a subgenre of horror fiction that relies on character fears, guilt, beliefs, eerie sound effects, relevant music and emotional instability to build tension and further the plot. Psychological horror is different from the type of horror found in "splatter films"' which derive their effects from gore and violence, and from the sub-genre of horror-of-personality, in which the object of horror does not look like a monstrous other, but rather a normal human being, whose horrific identity is often not revealed until well into the work, or even at the very end.

Paranormal horror - is a genre of filmmaking,  in which all or a substantial part of a film is presented as discovered film or video recordings, often left behind by missing or dead protagonists. The events onscreen are seen through the camera of one or more of the characters involved, who often speaks offscreen. Filming may be done by the actors themselves as they recite their lines, and shaky camerawork is often employed for realism. While the genre dates back at least as far as 1980's Cannibal Holocaust, it was popularised after the release of such films as The Blair Witch Project (1999), Paranormal Activity (2007) and Cloverfield (2008).

Torture horror - watching the act of inflicting excruciating pain, as punishment or revenge, as a means of getting a confession or information, or for sheer cruelty.

Splatter horror - hearing the noise of something spattering or sputtering explosively, for example, a body or someone's bones.

Science Fiction - Sci-fi horror films are a sub-genre of science fiction and horror films, often revolving around subjects that include but are not limited to alien invasions, mad scientists, and/or experiments gone wrong.

Vampire horror - Usually involves and shows a vampire sucking a 'mortal's' blood in order for them to survive. Usually involves a twist, eg, vampire being next door neighbour. The first few vampire horrors involved the typical 'Dracula character', with pale skin and who couldn't go out in the light.

I think for my movie trailer, I will do a paranormal horror genre because it means i can be more flexible with my ideas.