boxcar vs buggy

boxcar

noun
  • An enclosed railway goods wagon, typically with a sliding door. 

verb
  • To reduce to a boxcar function. 

buggy

noun
  • A small horse-drawn cart. 

  • A hearse. 

  • A small motor vehicle, such as a dune buggy. 

  • A pushchair; a stroller. 

  • A shopping cart or trolley. 

adj
  • Crazy; bughouse. 

  • Containing programming errors. 

  • Resembling an insect. 

  • Infested with insects. 

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