infantry vs trooper

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 

trooper

noun
  • A troopship. 

  • One who endures adversity or hardship with an attitude of stoicism and persistence. 

  • A cavalry horse; a charger. 

  • A mounted policeman. 

  • A soldier. 

  • A soldier of private rank in cavalry or armour. 

verb
  • To work steadily at an unpleasant job without complaint. 

  • To work as a trooper. 

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