diegesis vs scenario

diegesis

noun
  • A narration or recitation. 

scenario

noun
  • An outline of the plot of a dramatic or literary work. 

  • An outline or model of an expected or supposed sequence of events. 

  • A screenplay itself, or an outline or a treatment of it. 

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