substantive vs true

substantive

adj
  • Of or pertaining to a substantive. 

  • Constituting the substance of content rather than its style, and thus always nontrivial. 

  • actually and legally held, as distinct from an acting, temporary or honorary rank or appointment 

  • Having substance; enduring; solid; firm; substantial. 

  • of the essence or essential element of a thing. 

  • applying to essential legal principles and rules of right. 

  • Depending on itself; independent. 

  • of a dye that does not need the use of a mordant to be made fast to that which is being dyed 

verb
  • to make a word belonging to another part of speech into a substantive (that is, a noun) or use it as a noun 

noun
  • Part of a text that carries the meaning, such as words and their ordering. 

true

adj
  • Genuine; legitimate, valid. 

  • As an ellipsis of "(while) it is true (that)", used to start a sentence 

  • Conforming to a rule or pattern; exact; accurate. 

  • Correctly aligned or calibrated, without deviation. 

  • based on actual historical events. 

  • Conforming to the actual state of reality or fact; factually correct. 

  • Used in the designation of group of species, or sometimes a single species, to indicate that it belongs to the clade its common name (which may be more broadly scoped in common speech) is restricted to in technical speech, or to distinguish it from a similar species, the latter of which may be called false. 

  • Fair, unbiased, not loaded. 

  • Of the state in Boolean logic that indicates an affirmative or positive result. 

  • Loyal, faithful. 

  • Accurate; following a path toward the target. 

verb
  • To straighten (of something that is supposed to be straight). 

  • To make even, level, symmetrical, or accurate, align; adjust. 

noun
  • The state of being in alignment. 

adv
  • Accurately. 

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