begin vs go to bed

begin

noun
  • Beginning; start. 

verb
  • To come into existence. 

  • To be in the first stage of some situation 

  • To start, to initiate or take the first step into something. 

go to bed

verb
  • Of a newspaper: to finish being prepared for printing. 

  • To lie down to sleep, put oneself in one's bed. 

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