get across vs surmise

get across

verb
  • To make an idea evident; to successfully explain a thought or feeling; put over. 

  • To cross; to move from one side (of something) to the other, literally or figuratively. 

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