growl vs sound off

growl

verb
  • To express (something) by growling. 

  • 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. 

noun
  • 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. 

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

sound off

verb
  • Command instructing a person to speak up or acknowledge something. 

  • To hold forth about something in an opinionated manner. 

  • Command instructing a person to confirm that they are present or that some other objective has been met. 

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