hand truck vs motorcycle

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 

motorcycle

noun
  • An open-seated motor vehicle with handlebars instead of a steering wheel, and having two (or sometimes three) wheels. 

verb
  • To ride a motorcycle. 

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