sign on vs turn away

sign on

noun
  • The time of day when a radio or television station begins broadcasting, usually after being off the air for several hours. 

verb
  • To begin broadcasting a radio or television signal, usually at the beginning of a broadcasting day and after being off the air for several hours. 

  • To commit oneself, as to a project, a goal, an organization, a cause. 

  • To join something, after signing. 

  • To apply to receive unemployment benefits. 

  • To log on; to start using a computer, radio, etc., or to start talking. 

turn away

verb
  • To rotate the body or head so as not to face someone or something. 

  • To refuse to admit someone. 

  • To bend or turn from a fixed course. 

  • To avert or deflect something. 

How often have the words sign on and turn away occurred in a corpus of books? (source: Google Ngram Viewer )