fiacre vs mud-kicker

fiacre

noun
  • A small horse-drawn carriage for hire; a hackney carriage. 

mud-kicker

noun
  • A racehorse. 

  • Streetwalker; a prostitute who looks for customers in public places, especially one who works for a pimp. 

  • An unskilled laborer; One who makes his living by outdoor manual labor. 

  • A workboot designed for outdoor work, especially one that can be worn on muddy ground. 

How often have the words fiacre and mud-kicker occurred in a corpus of books? (source: Google Ngram Viewer )