tails vs white tie

tails

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

  • Tailings; waste. 

  • Tailings, feints. 

white tie

noun
  • A dress code specifying white tie for men and ball gown or evening dress for women, or, alternatively, full military dress or national costume. 

  • The most formal kind of eveningwear for men, consisting of an evening tailcoat, trousers with strips of braid down the side seams, white stiff-fronted shirt, white bow tie and waistcoat with or without sash. 

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