studying vs surmise

studying

noun
  • The action of the verb to study. 

surmise

noun
  • Reflection; thought; posit. 

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

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

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