disinclination vs proneness

disinclination

noun
  • The state of being disinclined; want of propensity, desire, or affection; slight aversion or dislike 

proneness

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

  • The state of lying with the face down. 

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

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