charabanc vs minibus

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. 

minibus

noun
  • A small four-wheeled carriage. 

  • A small bus, especially one used as transport for small groups. 

  • A sixteen-seater vehicle used as a taxi. 

  • A combined spending bill for multiple departments that is smaller than an omnibus bill. 

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