duel vs rough-and-tumble

duel

noun
  • Any battle or struggle between two contending persons, forces, groups, or ideas. 

  • Arranged, regular combat between two private persons, often over a matter of honor. 

  • Historically, the wager of battle (judicial combat). 

verb
  • To engage in a battle. 

rough-and-tumble

noun
  • Rough activity; fighting or brawling; a fight. 

  • An environment of rough activity 

  • A person who characteristically engages in such activity 

verb
  • Engage in rough-and-tumble activity 

adj
  • active, vigorous and rough, with the possibility of harm 

  • highly competitive 

How often have the words duel and rough-and-tumble occurred in a corpus of books? (source: Google Ngram Viewer )