grandstand vs viewership

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. 

viewership

noun
  • collectively, the viewers of a television program or other video broadcast 

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