bite the hand that feeds one vs delate

bite the hand that feeds one

verb
  • To cause harm to a benefactor (especially one that one is dependent on, thus with the idea that this behaviour is self-damaging). 

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. 

How often have the words bite the hand that feeds one and delate occurred in a corpus of books? (source: Google Ngram Viewer )