deliberative vs speculative

deliberative

adj
  • That deliberates, considers carefully. 

noun
  • A kind of rhetoric employed in proving a thing and convincing others of its truth, in order to persuade them to adopt it. 

  • A discourse in which a question is discussed, or weighed and examined. 

speculative

adj
  • Characterized by speculation; based on guessing, unfounded opinions, or extrapolation. 

  • Pursued as a gamble, with possible large profits or losses; risky. 

  • Pertaining to financial speculation; Involving or resulting from high-risk investments or trade. 

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