coach driver vs hackney

coach driver

noun
  • A person driving a horse-drawn coach (carriage). 

  • A person employed to drive a coach (long-distance bus). 

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 coach driver and hackney occurred in a corpus of books? (source: Google Ngram Viewer )