chiller vs thriller

chiller

noun
  • A frightening dramatic work, such as a book or film 

  • A machine that removes heat from the working fluid in a refrigeration cycle 

  • a heat exchanger between a coolant and a refrigerant, to transfer heat from the coolant loop into the refrigeration system 

  • a machine that produces cold air, either for air conditioning, to prepare chilled foods etc. 

thriller

noun
  • A suspenseful, sensational genre of story, book, play or film. 

  • Something that thrills. 

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