audience vs stand-in

audience

noun
  • The readership of a book or other written publication. 

  • A following. 

  • An audiencia (judicial court of the Spanish empire), or the territory administered by it. 

  • A widespread or nationwide viewing or listening public, as of a TV or radio network or program. 

  • A group of people within hearing; specifically, a large gathering of people listening to or watching a performance, speech, etc. 

  • A formal meeting with a state or religious dignitary. 

stand-in

noun
  • A person of similar size and shape to an actor who "stands in" for that actor during the lengthy process of setting up a shot, but who, unlike a double, does not appear in the film. 

  • A substitute. 

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