regalia vs white tie

regalia

noun
  • Finery, magnificent dress, or lavish or flashy costume. 

  • The emblems, symbols, or paraphernalia indicative of royalty or any other sovereign status; such as a crown, orb, sceptre or sword. 

  • Traditional dress and accessories of North American Indigenous nations worn for ritual purposes. 

  • Royal rights, prerogatives and privileges actually enjoyed by any sovereign, regardless of his title (emperor, grand duke etc.). 

  • Decorations or insignia indicative of an office or membership of an order or society; such as freemasonry. 

white tie

noun
  • 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. 

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

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