penchant vs propensity

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. 

propensity

noun
  • An inclination, disposition, tendency, preference, or attraction. 

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