ardor vs genius loci

ardor

noun
  • Spirit; enthusiasm; passion. 

  • Intense heat. 

  • Great warmth of feeling; fervor; passion. 

genius loci

noun
  • The spirit or atmosphere of a place, especially conceived as a source of artistic inspiration. 

  • The minor deity or spirit watching over a particular place. 

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