trike vs velocipede

trike

noun
  • A tricycle, typically that of a child 

  • A three-wheeled motorbike 

  • A triceratops. 

  • A kind of railroad maintenance vehicle: a speeder or jigger 

verb
  • To tricycle; to travel by tricycle. 

velocipede

noun
  • A bicycle. 

  • An early two-wheeled conveyance upon which one rode astride a wooden frame propelled by means of pushing the feet against the ground. 

verb
  • to ride on velocipede 

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