amity vs hostility

amity

noun
  • 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. 

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

hostility

noun
  • The state of being hostile. 

  • A hostile action, especially a military action. See hostilities for specific plural definition. 

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