cannonade vs shootout

cannonade

noun
  • The firing of artillery for a length of time. 

  • A loud noise like a cannonade; a booming. 

verb
  • To discharge artillery fire upon. 

shootout

noun
  • A decisive battle, especially a gunfight. 

  • A series of penalty shots during which a tied game is resolved. 

  • A multitable poker tournament in which only the last player on a table goes on to the next. 

  • A match in which both teams score highly. 

  • A penalty shootout. 

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