hussar vs old sweat

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. 

old sweat

noun
  • An experienced soldier. 

  • A veteran soldier or war veteran. 

  • Someone experienced in his or her field. 

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