greyhound vs yellow dog

greyhound

noun
  • A lean breed of dog used in hunting and racing. 

  • A highball cocktail of vodka and grapefruit juice. 

verb
  • To leap rapidly across the surface of the water. 

yellow dog

noun
  • A Carolina dog. 

  • An item or person of low value. 

  • Used other than figuratively or idiomatically: see yellow, dog. 

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