sundown vs sunrise

sundown

noun
  • Sunset. 

  • A hat with a wide brim to shade the eyes from sunlight. 

verb
  • to experience an episode or an onset of some detrimental mental condition like agitation, anxiety, hallucination or dementia, daily at nightfall. 

sunrise

noun
  • The change in color of the sky at dawn. 

  • Any great awakening. 

  • The time of day when the sun appears above the eastern horizon. 

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