What is a Thriller? What is a Horror?

The word Thriller comes from the word to thrill which means pierce.
The Thriller genre is diffficult to define because so many of the emotions and reactions that come from Thriller are part of the whole experience of film. It is a 'meta-genre'.
The types of Thriller can be very variuos. Most used type is the psychogical like Seven, I am Legend or The Ring.
Action and Espionage type is something like James Bond movies and Charade with Audrey Hepburn. Another often used type is the paranomal and ghosts Thriller type. Movies like Gothica and Panic Room.
The Thriller creates fear, apprehension and suspense in the hearts and minds of the audience and relies on intricacy of plot.
It plays on our most basic worries by drawing on the most infanite and therefore repressed thoughts. These thoughts can be voyeristic, sexual or violent.
The Thriller achieves this by raising questions or Enigma codes in the mind of the audience.
The audience also experiences a sense of ambiralence. They feel a sense of identification and sympathy with the hero's or victim's vulnerabilit.
Most Thrillers have universal themes at their core - the struggle over love, death or money. It is this Struggle that often enthralls the spectator.
It is also done through a sense of delay. When something does happen, there is a sense of relief from tension.
In many ways the Thriller genre is sadomachistic - the audience enjoys watching the director cause pian and suffering to the protagonists. Our pleasure is drived from their discomfort.
Horror films are slightly different to Thrillers.
Horror movies are most of the time based on death, mental illness and supernatural.
Thrillers are to excite and Horror are about blood and death and haven't sometimes a real story in it.
Movies like Frankenstein,Dr. Jekyll and Mr. Hyde are more the classic horror literature.
Halloween, Friday the 13th, and The hills have Eyes are more the new movies.