horseflesh vs workhorse

horseflesh

noun
  • The flesh of a horse; horsemeat. 

  • Horses collectively, with reference to driving, riding, or racing. 

  • A species of Bahama mahogany, Lysiloma sabicu and Lysiloma latisiliquum. 

adj
  • Of the colour of horseflesh; of a peculiar reddish-brown hue. 

workhorse

noun
  • A horse used primarily for manual labor; a draft horse. 

  • Anyone or anything that does a lot of work; something or someone who works consistently or regularly. 

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