bivouac vs noon

bivouac

verb
  • To encamp for the night without tents or covering. 

  • To set up camp. 

  • To watch at night or be on guard, as a whole army. 

noun
  • An encampment for the night, usually without tents or covering. 

  • Any temporary encampment. 

  • A temporary shelter constructed generally for a few nights. 

  • A structure formed by migratory ants out of their own bodies to protect the queen and larvae. 

noon

verb
  • To relax or sleep around midday 

noun
  • The highest point; culmination. 

  • The letter ن in the Arabic script. 

  • The time of day when the sun is in its zenith; twelve o'clock in the day, midday. 

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