four-in-hand vs hackney

four-in-hand

noun
  • A carriage drawn by four horses controlled by one driver; a coach-and-four. 

  • A slip knot with one end hanging in front of the other; a simple necktie. 

hackney

noun
  • A horse used to ride or drive. 

  • A carriage for hire or a cab. 

  • A breed of English horse. 

verb
  • To make uninteresting or trite by frequent use. 

  • To use as a hackney. 

  • To carry in a hackney coach. 

adj
  • Much used; trite; mean. 

  • Offered for hire. 

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