devise vs surmise

devise

verb
  • To use one’s intellect to plan or design (something). 

  • To leave (property) in a will. 

noun
  • The act of leaving real property in a will. 

  • Design, devising. 

  • Such a will, or a clause in such a will. 

  • The real property left in such a will. 

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 devise and surmise occurred in a corpus of books? (source: Google Ngram Viewer )