truth vs untruth

truth

noun
  • Conformity to fact or reality; correctness, accuracy. 

  • Something acknowledged to be true; a true statement or axiom. 

  • True facts, genuine depiction or statements of reality. 

  • Conformity to rule; exactness; close correspondence with an example, mood, model, etc. 

  • That which is real, in a deeper sense; spiritual or ‘genuine’ reality. 

  • In the game truth or dare, the choice to truthfully answer a question put forth. 

  • The state or quality of being true to someone or something. 

verb
  • To tell the truth. 

  • To make exact; to correct for inaccuracy. 

untruth

noun
  • The condition of being false; truthlessness. 

  • A lie or falsehood. 

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