casern vs lodgment

casern

noun
  • A lodging for soldiers in a garrison town (formerly usually near the rampart); a barracks. 

lodgment

noun
  • An area used for lodging; a place in which a person or thing is or can be lodged. 

  • The occupation of a position by a besieging party, and the works thrown up to maintain it. 

  • The act of lodging or depositing. 

  • The condition of being lodged. 

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