regalia vs threads

regalia

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

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

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

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

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

threads

noun
  • Clothes. 

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