counterfactual vs illegitimate

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. 

illegitimate

adj
  • Not correctly deduced. 

  • Not sanctioned by marriage. 

  • Not authorized by good usage; not genuine. 

  • Involving the fertilization of pistils by stamens not of their own length, in heterogonously dimorphic and trimorphic flowers. 

  • Not conforming to known principles, or established or accepted rules or standards. 

  • Born to unmarried parents. 

  • Not in accordance with the law. 

noun
  • A person born to unmarried parents. 

verb
  • To make illegitimate. 

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