noon vs twilight

noon

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

  • The highest point; culmination. 

  • The letter ن in the Arabic script. 

verb
  • To relax or sleep around midday 

twilight

noun
  • The time when the sun is less than 18° below the horizon. 

  • Any faint light through which something is seen; an in-between or fading condition. 

  • The soft light in the sky seen before the rising and (especially) after the setting of the sun, occasioned by the illumination of the earth’s atmosphere by the direct rays of the sun and their reflection on the earth. 

  • The time when this light is visible; the period between daylight and darkness. 

verb
  • To illuminate faintly. 

adj
  • Pertaining to or resembling twilight; faintly illuminated; obscure. 

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