minivan vs rickshaw

minivan

verb
  • To travel or transport in a small van. 

noun
  • A large and spacious passenger car, typically with five or seven seats and sliding rear doors 

  • A small van. 

rickshaw

verb
  • To move someone by means of a rickshaw. 

noun
  • A two-wheeled carriage pulled along by a person. 

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