jamboree vs war dance

jamboree

noun
  • A boisterous or lavish celebration or party. 

  • In euchre: an undefeatable hand containing the five highest cards. 

  • A large rally of Scouts or Guides. 

war dance

noun
  • A ceremonial dance performed before a major battle or after a victory, usually by a tribe. 

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