great cat vs lioness

great 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 great, cat. 

lioness

noun
  • A female lion (animal). 

  • A female lion (famous person regarded with interest and curiosity). 

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