doggy style vs puppy dog

doggy style

noun
  • The position assumed for doggy style intercourse. 

adv
  • In a position whereby one partner is on all fours and the other partner is penetrating from behind. 

adj
  • With one partner on all fours and the other penetrating from behind. 

puppy dog

noun
  • A puppy; a young dog. 

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