doze vs go to sleep

doze

verb
  • To sleep lightly or briefly; to nap, snooze. 

  • To bulldoze. 

  • To make dull; to stupefy. 

noun
  • A light, short sleep or nap. 

go to sleep

verb
  • To fall asleep. 

  • To be affected by paresthesia; to go numb. 

  • To die. 

How often have the words doze and go to sleep occurred in a corpus of books? (source: Google Ngram Viewer )