predict vs surmise

predict

verb
  • To imply. 

  • To make predictions. 

  • To make a prediction: to forecast, foretell, or estimate a future event on the basis of knowledge and reasoning; to prophesy a future event on the basis of mystical knowledge or power. 

  • To direct a ranged weapon against a target by means of a predictor. 

surmise

verb
  • To imagine or suspect; to conjecture; to posit with contestable premises. 

noun
  • Thought, imagination, or conjecture, which may be based upon feeble or scanty evidence; suspicion; guess. 

  • Reflection; thought; posit. 

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