altruism vs amity

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. 

amity

noun
  • Mutual understanding and a peaceful relationship, especially between nations; peace; accord. 

  • Friendship. The cooperative and supportive relationship between people, or animals. In this sense, the term connotes a relationship which involves mutual knowledge, esteem, affection, and respect along with a degree of rendering service to friends in times of need or crisis. 

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