pep rally vs round table

pep rally

noun
  • A meeting or gathering for the purpose of instilling enthusiasm and motivation in attenders. 

  • An extracurricular school activity in which students gather to express support for the school sports team before a game. 

round table

noun
  • A conference at which participants of similar status discuss and exchange views. 

  • A television show segment in which pundits or reporters discuss current events. 

  • Used other than figuratively or idiomatically: see round, table. 

How often have the words pep rally and round table occurred in a corpus of books? (source: Google Ngram Viewer )