cordillera vs puy

cordillera

noun
  • An extensive, continent-wide chain of mountains, especially one in the Americas. 

puy

noun
  • Any of several cone-shaped hills in the Auvergne, France that are the remains of extinct volcanos 

  • Any similar conical structure of volcanic material 

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