big cat vs puma

big cat

noun
  • Any large feline animal, especially one of the Panthera genus, including tigers, lions, jaguars and leopards. 

  • Used other than figuratively or idiomatically: see big, cat. 

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 big cat and puma occurred in a corpus of books? (source: Google Ngram Viewer )