hobby horse vs horseflesh

hobby horse

noun
  • A child's toy consisting of a (usually wooden or cloth) horse's head mounted on a stick. 

  • A topic about which someone loves to talk at great length. 

  • The Irish hobby, an extinct breed of horse. 

  • A puppet-like costume used in some traditional dances and festivals that gives its wearer the appearance of a man on horseback. 

  • An early bicycle with no pedals or brakes; a draisienne. 

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. 

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