landau vs motorcycle

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. 

motorcycle

noun
  • An open-seated motor vehicle with handlebars instead of a steering wheel, and having two (or sometimes three) wheels. 

verb
  • To ride a motorcycle. 

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