grandstand vs refrain

grandstand

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

noun
  • The audience at a public event. 

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

refrain

verb
  • To stop oneself from some action or interference; to abstain. 

  • To abstain from (food or drink). 

noun
  • The chorus or burden of a song repeated at the end of each verse or stanza. 

  • A much repeated comment, complaint, or saying. 

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