disinterest vs impetuosity

disinterest

noun
  • The absence of interest (bias or stake). 

  • An absence of interest (attention or curiosity). 

verb
  • To render disinterested. 

impetuosity

noun
  • The quality of making rash or arbitrary decisions, especially in an impulsive or forceful manner. 

  • Vehemence; furiousness of temper. 

  • The condition or quality of being impetuous, impatient; fury; violence. 

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