prizefight vs slugfest

prizefight

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

slugfest

noun
  • A game or match in which heavy blows are exchanged. 

  • A baseball game in which many runs are scored, especially by home runs. 

  • A tough, heated contest. 

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