feud vs prizefight

feud

noun
  • A staged rivalry between wrestlers. 

  • A state of long-standing mutual hostility. 

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

verb
  • To carry on a feud. 

prizefight

noun
  • A professional boxing match, in which two boxers compete for a prize (usually money). 

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