foretoken vs prediction

foretoken

noun
  • A prognostic; a premonitory sign; warning or presentiment. 

verb
  • To betoken beforehand; prognosticate; foreshadow; give warning of; presage. 

prediction

noun
  • A statement of what will happen in the future. 

  • A probability estimation based on statistical methods. 

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