booty vs sex partner

booty

noun
  • A person considered as a sexual partner or sex object. 

  • A form of prize which, when a ship was captured at sea, could be distributed at once. 

  • Something that has been stolen or illegally obtained from elsewhere. 

  • The buttocks. 

  • Sexual intercourse. 

  • The vulva and vagina. 

  • Plunder taken from an enemy in time of war, or seized by piracy. 

sex partner

noun
  • Someone that one has sex with, especially on an informal or casual basis. 

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