atrocity vs horror

atrocity

noun
  • The quality or state of being atrocious; enormous wickedness; extreme criminality or cruelty. 

  • An extremely cruel act; a horrid act of injustice. 

  • An object considered to be extremely unattractive or undesirable. 

horror

noun
  • A nasty or ill-behaved person; a rascal or terror. 

  • An intense distressing emotion of fear or repugnance. 

  • A genre of fiction designed to evoke a feeling of fear and suspense. 

  • An individual work in this genre. 

  • Delirium tremens. 

  • Intense dislike or aversion; an abhorrence. 

  • Something horrible; that which excites horror. 

  • An intense anxiety or a nervous depression; often the horrors. 

How often have the words atrocity and horror occurred in a corpus of books? (source: Google Ngram Viewer )