docudrama vs storytelling

docudrama

noun
  • A type of drama (a film, a television show, or a play) that combines elements of documentary and drama, to some extent showing real events and to some extent using actors performing recreations of documented events. 

storytelling

noun
  • The act and skills of presenting stories and tales. 

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