tuxedo vs ulster

tuxedo

noun
  • The entire suit complementing and including this jacket. 

  • A typically black formal jacket worn by men. 

ulster

noun
  • A long, loose overcoat made of wool or other rough material, often called a greatcoat, which sometimes features an attached shoulder cape covering the back and sleeves, and which can sometimes be buttoned in front. 

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