hostility vs rapport

hostility

noun
  • The state of being hostile. 

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

rapport

noun
  • A relationship of mutual trust and respect. A close and harmonious relationship in which the people or groups concerned understand each other's feelings or ideas and communicate well. 

  • Relation; proportion; conformity. 

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