truth vs validity

truth

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

  • 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. 

verb
  • To tell the truth. 

  • To make exact; to correct for inaccuracy. 

validity

noun
  • The state of being valid, authentic or genuine. 

  • The genuinity - as distinguished from the efficacity or the regularity - of a sacrament as a result of some formal dispositions being fulfilled. 

  • State of having legal force. 

  • A quality of a measurement indicating the degree to which the measure reflects the underlying construct, that is, whether it measures what it purports to measure (see reliability). 

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