bivy vs bunk

bivy

verb
  • To camp in a bivouac. 

noun
  • A bivouac sack. 

bunk

verb
  • To occupy a bunk. 

  • To fail to attend school or work without permission; to play truant (usually as in 'to bunk off'). 

  • To provide a bunk. 

  • To depart; scram. 

adj
  • Defective, broken, not functioning properly. 

noun
  • A wooden case or box, which serves for a seat in the daytime and for a bed at night. 

  • A cot. 

  • Bunkum; senseless talk, nonsense. 

  • A specimen of a recreational drug with insufficient active ingredient. 

  • A piece of wood placed on a lumberman's sled to sustain the end of heavy timbers. 

  • A built-in bed on board ship, often erected in tiers one above the other. 

  • One of a series of berths or beds placed in tiers. 

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