trench coat vs tuxedo

trench coat

noun
  • A military-style raincoat with a belt and deep pockets and often epaulettes. 

tuxedo

noun
  • The entire suit complementing and including this jacket. 

  • A typically black formal jacket worn by men. 

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