inference vs unexpected

inference

noun
  • That which is inferred; a truth or proposition drawn from another which is admitted or supposed to be true; a conclusion; a deduction. 

  • The act or process of inferring by deduction or induction. 

unexpected

noun
  • Someone or something unexpected. 

adj
  • Not expected, anticipated or foreseen. 

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