doggy vs yellow dog

doggy

noun
  • A dog, especially a small one. 

  • Doggy style. 

  • A junior temporarily assigned to do minor duties for a senior; a gofer. 

adv
  • Doggy style. 

adj
  • Suggestive of or in the manner of a dog. 

  • Doggy style. 

  • Fond of dogs. 

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 doggy and yellow dog occurred in a corpus of books? (source: Google Ngram Viewer )