driver vs leadfoot

driver

noun
  • One who drives something, in any sense of the verb drive. 

  • A person who drives some other vehicle. 

  • A golf club used to drive the ball a great distance. 

  • A mallet. 

  • A cooper's hammer for driving on barrel hoops. 

  • A screwdriver. 

  • a kind of sail, smaller than a fore and aft spanker on a square-rigged ship, a driver is tied to the same spars. 

  • Something that drives something, in any sense of the verb drive. 

  • A pilot (person who flies aircraft). 

  • A device driver; a program that acts as an interface between an application and hardware, written specifically for the device it controls. 

  • A person who drives a motorized vehicle such as a car or a bus. 

  • A tamping iron. 

leadfoot

noun
  • One who drives quickly or without subtlety, one who often engages in and/or is fond of slamming and flooring the accelerator often. 

  • A driver who does not compensate the throttle position of the vehicle for road conditions or terrain, invariably slowing down while going uphill and speeding up while going downhill. 

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