ass vs wild horse

ass

noun
  • Any of several species of horse-like animals, especially Equus asinus, the domesticated of which are used as beasts of burden. 

  • The anus. 

  • A stupid person. 

  • Sex; a person to have sex with; with vulgar emphasis on their corporeality (their body) over their personhood. 

  • Used in similes to express something bad or unpleasant. 

  • A person; the self; (reflexively) oneself or one's person, chiefly their body. By extension, one's personal safety, or figuratively one's job, prospects, etc. 

  • The buttocks. 

particle
  • Synonym of -ass (“used to intensify an adjective”) 

adj
  • Of low quality; bad. 

wild horse

noun
  • A member of the species Equus ferus, sometimes excluding the domesticated horse. 

  • A feral horse. 

  • An untamed horse. 

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