beneficence vs knavery

beneficence

noun
  • An act of philanthropy, a kind deed; an act which benefits someone else. 

  • Good or charitable character or behavior. 

knavery

noun
  • An unprincipled action; deceit. 

  • The antics or tricks of a knave; boyish mischief. 

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