generosity vs self-serving

generosity

noun
  • A generous act. 

  • The trait of being abundant, more than adequate. 

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

self-serving

adj
  • Showing interest only in oneself (pursuing self-interest to the exclusion of other goals). 

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