American lion vs puma

American lion

noun
  • Panthera leo atrox or Panthera atrox, an extinct lion endemic to North America and northwestern South America during the Pleistocene epoch. 

puma

noun
  • A mountain lion or cougar (Puma concolor). 

  • A woman in her 20s or 30s who seeks relationships with younger men; a younger cougar. 

  • Any feline belonging to the genus Puma. 

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