auditorium vs town hall

auditorium

noun
  • a large room for public meetings or performances 

  • the space where the audience is located 

town hall

noun
  • A widely accessible meeting, particularly where the audience is allowed to interact with the speakers. 

  • A building that houses the local government offices of a town. 

  • The town council 

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