dray vs forklift

dray

noun
  • A low horse-drawn cart, often without sides, and used especially for heavy loads. 

  • A kind of sledge or sled. 

forklift

noun
  • A small industrial vehicle with a power-operated fork-like pronged platform that can be raised and lowered for insertion under a load, often on pallets, to be lifted and moved. 

verb
  • To move or stack with, or as if with, such a vehicle. 

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