landau vs sulky

landau

noun
  • A type of lightweight, four-wheeled carriage in which the front and back passenger seats face each other. 

  • A style of automobile based around the design of landau carriages. 

sulky

noun
  • A low two-wheeled cart, used in harness racing. 

  • Any carriage seating only the driver. 

adj
  • silent and withdrawn after being upset 

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