euphonium vs growl

euphonium

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

growl

noun
  • A low-pitched rumbling sound produced with a wind instrument. 

  • A similar sound made by a human. 

  • The rumbling sound made by a human's hungry stomach. 

  • An aggressive grumbling. 

  • A deep, rumbling, threatening sound made in the throat by an animal. 

verb
  • To play a wind instrument in a way that produces a low-pitched rumbling sound. 

  • To utter a deep guttural sound, as an angry animal; to give forth an angry, grumbling sound. 

  • Of a wind instrument: to produce a low-pitched rumbling sound. 

  • To send a user a message via the Growl software library. 

  • To express (something) by growling. 

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