counterfactual vs erroneous

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. 

erroneous

adj
  • Containing an error; inaccurate. 

  • Derived from an error. 

  • Mistaken. 

  • Deviating from the requirements of the law, but without a lack of legal authority, thus not illegal. 

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