generosity vs mercenariness

generosity

noun
  • A generous act. 

  • The trait of being abundant, more than adequate. 

  • The trait of being willing to donate money, time or resources. 

mercenariness

noun
  • The state or condition of being mercenary. 

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