feline vs leonine

feline

adj
  • Of or pertaining to cats. 

  • catlike (resembling a cat); sleek, graceful, inscrutable, sensual, and/or cunning. 

noun
  • A cat; member of the cat family Felidae. 

  • Any member of Felinae, one of the two extant subdivisions of Felidae. 

leonine

adj
  • Of, pertaining to, or characteristic of a lion. 

noun
  • A 13th-century coin minted in Europe and used in England as a debased form of the sterling silver penny, outlawed under Edward I. 

  • A kind of Latin verse, generally alternate hexameter and pentameter, rhyming at the middle and end. 

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