feud vs rapport

feud

noun
  • A state of long-standing mutual hostility. 

  • An estate granted to a vassal by a feudal lord in exchange for service. 

  • A staged rivalry between wrestlers. 

verb
  • To carry on a feud. 

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 feud and rapport occurred in a corpus of books? (source: Google Ngram Viewer )