demonstrative vs presentational

demonstrative

adj
  • that serves to demonstrate, show or prove 

  • given to open displays of emotion 

  • that specifies the thing or person referred to 

noun
  • A demonstrative pronoun. 

  • A demonstrative adjective. 

presentational

adj
  • Of, or pertaining to, presentation(s). 

noun
  • A clause using existential "there" with a verb other than a form of "be", as in "There followed a brief silence". 

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