doughboy vs hussar

doughboy

noun
  • An American infantryman, especially one from World War I. 

  • A kind of flour dumpling. 

  • Frybread. 

hussar

noun
  • A member of the light cavalry of any of several European armies. 

  • A member of the national cavalry of Hungary, Croatia and Poland. 

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