auditorium vs field house

auditorium

noun
  • a large room for public meetings or performances 

  • the space where the audience is located 

field house

noun
  • A large building for indoor sports, particularly at colleges. 

  • A building for equipment storage and changing rooms (locker rooms) by an outdoor sports field. 

  • A tent. 

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