assizes vs courtroom

assizes

noun
  • A trial or hearing before such a court. 

  • The regional courts of Great Britain, which were replaced by the Crown Courts in 1971. 

courtroom

noun
  • The room where a judge presides over hearings and trials, sometimes with a jury. 

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