cornet vs euphonium

cornet

noun
  • A musical instrument of the brass family, slightly smaller than a trumpet, usually in the musical key of B-flat. 

  • A kind of organ stop. 

  • The white headdress worn by the Sisters of Charity. 

  • A pastry shell to be filled with ice-cream, hence (UK, dated) an ice cream cone. 

  • The fifth commissioned officer in a cavalry troop, who carried the colours (equivalent to the ensign in infantry). 

  • A piece of paper twisted to be used as a container. 

euphonium

noun
  • A valved brass instrument with conical tubing similar in appearance to a tuba but of higher pitch; a sax horn. 

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