penchant vs proneness

penchant

noun
  • Taste, liking, or inclination (for). 

  • A card game resembling bezique. 

  • In the game of penchant, any queen and jack of different suits held at the same time. 

proneness

noun
  • Inclination of mind, heart, or temper; propension; disposition. 

  • The quality or state of being prone, or of bending downward. 

  • The state of lying with the face down. 

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