raincoat vs tails

raincoat

noun
  • A condom. 

  • A waterproof coat to be worn in the rain. 

tails

noun
  • The side of a coin that doesn't bear the picture of the head of state or similar. 

  • Tailings; waste. 

  • Tailings, feints. 

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