hussar vs infantry

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. 

infantry

noun
  • A regiment of infantry 

  • Soldiers who fight on foot (on land), as opposed to cavalry and other mounted units, regardless of external transport (e.g. airborne). 

  • The part of an army consisting of infantry soldiers, especially opposed to mounted and technical troops 

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