barricade vs battle royal

barricade

noun
  • A place of confrontation. 

  • A barrier constructed across a road, especially as a military defence 

  • An obstacle, barrier, or bulwark. 

verb
  • to close or block a road etc., using a barricade 

  • to keep someone in (or out), using a blockade, especially ships in a port 

battle royal

noun
  • A heated discussion or debate. 

  • A fight involving three or more individuals, teams, or factions; fought until one person, team, or faction is left standing. 

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