camping vs laager

camping

noun
  • The act of setting up a camp. 

  • The recreational activity of temporarily living in a tent or similar accommodation, usually in the wilderness. 

laager

noun
  • A defensive encampment encircled by wagons, especially by South African Boers. 

  • A temporary formation of armoured vehicles for resupply. 

verb
  • To arrange in a circular formation for defence. 

  • To camp in a circular formation. 

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