standard literary and psychological concept applied especially to Gothic literature and film
The distinction between horror and terror is a standard literary and psychological concept applied especially to Gothic and horror fiction. Terror is usually described as the feeling of dread and anticipation that precedes the horrifying experience. By contrast, horror is the feeling of revulsion that usually follows a frightening sight, sound, or otherwise experience.
Horror has also been defined by Noel Carroll as a combination of terror and revulsion.
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