delate vs turn King's evidence

delate

verb
  • To carry or bring against, as a charge; to inform against. 

  • To carry abroad; to spread; to make public. 

  • To carry; to convey. 

  • To carry on; to conduct. 

turn King's evidence

How often have the words delate and turn King's evidence occurred in a corpus of books? (source: Google Ngram Viewer )