grandstand vs hearership

grandstand

noun
  • The audience at a public event. 

  • The seating area at a stadium or arena; the bleachers. 

verb
  • To behave dramatically or showily to impress an audience or observers; to pander to a crowd. 

hearership

noun
  • The state of being a hearer; hearers collectively; audience; listenership. 

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