hussar vs infantryman

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. 

infantryman

noun
  • a male soldier of the infantry 

  • a soldier employed in an infantry role 

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