altruism vs liberality

altruism

noun
  • Regard for others, both natural and moral without regard for oneself; devotion to the interests of others; brotherly kindness. 

  • Action or behaviour that benefits another or others at some cost to the performer. 

liberality

noun
  • The property of being liberal; generosity; charity. 

  • A gift; a gratuity. 

  • Impartiality. 

  • Candor. 

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