contradictory vs counterfactual

contradictory

adj
  • Tending to contradict or oppose, contrarious. 

  • That contradicts something, such as an argument. 

  • That is diametrically opposed to something. 

  • That is itself a contradiction. 

  • Mutually exclusive. 

noun
  • Either of a pair of propositions, that cannot both be true or both be false. 

counterfactual

adj
  • Contrary to known or agreed facts; untrue. 

  • Of or in comparison to a hypothetical state of the world. 

noun
  • A conditional statement in which the conditional clause is false. 

  • A claim, hypothesis, or other belief that is contrary to the facts. 

  • A hypothetical state of the world, used to assess the impact of an action. 

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