blitz vs duel

blitz

verb
  • To perform a blitz. 

  • To do something quickly or in one session. 

  • To attack quickly or suddenly, as by an air raid or similar action. 

  • To purée or chop (food products) using a food processor or blender. 

noun
  • The act of blending or puréeing food using a blender or processor. 

  • A play in which additional defenders beyond the defensive linemen rush the passer. 

  • A swift and overwhelming attack or effort. 

  • A sudden attack, especially an air raid; usually with reference to the Blitz. 

duel

verb
  • To engage in a battle. 

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

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

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

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