pipe snake vs swine

pipe snake

noun
  • Synonym of plumber's snake 

  • Shieldtail snake, family Uropeltidae. 

swine

noun
  • A contemptible person (plural swines). 

  • A pig (the animal). 

  • A police officer; a "pig". 

  • Something difficult or awkward; a pain. 

How often have the words pipe snake and swine occurred in a corpus of books? (source: Google Ngram Viewer )