forebode vs promise

forebode

verb
  • To predict a future event; to hint at something that will happen (especially as a literary device). 

  • To be prescient of (some ill or misfortune); to have an inward conviction of, as of a calamity which is about to happen; to augur despondingly. 

promise

verb
  • To give grounds for expectation, especially of something good. 

  • To commit to (some action or outcome), or to assure (a person) of such commitment; to make an oath or vow. 

noun
  • A transaction between two persons whereby the first person undertakes in the future to render some service or gift to the second person or devotes something valuable now and here to his use. 

  • A placeholder object representing the eventual result of an asynchronous operation. 

  • Reason to expect improvement or success; potential. 

  • an oath or affirmation; a vow 

How often have the words forebode and promise occurred in a corpus of books? (source: Google Ngram Viewer )