four-wheel drive vs hand truck

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. 

hand truck

noun
  • An L-shaped box-moving handcart with handles at one end, wheels at the base, with a small ledge to set objects on, flat against the floor when the hand-truck is upright. It makes otherwise bulky and heavy objects easier to move. 

  • Synonym of pallet jack 

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