four-wheel drive vs quad bike

four-wheel drive

noun
  • A four-wheeled vehicle with a drivetrain that allows all four wheels to receive torque from the engine simultaneously. 

  • the type of vehicle transmission system. 

quad bike

noun
  • A small off-road four-wheeled powered vehicle, especially of a design derived from a motorcycle, usually used for recreation or farm work. 

How often have the words four-wheel drive and quad bike occurred in a corpus of books? (source: Google Ngram Viewer )