brougham vs charabanc

brougham

noun
  • A four-wheeled horse-drawn carriage, designed in 1839. It had an open seat for the driver in front of the closed cabin for two or four passengers. 

  • An automobile, a sedan without a roof over the driver's seat. 

charabanc

noun
  • A horse-drawn, and then later, motorized omnibus with open sides, and often, no roof. 

  • A derisive term for a car, bus, train or other vehicle that is poor quality, slow or overcrowded. 

verb
  • To travel or convey by charabanc. 

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