falsetto vs rumble

falsetto

noun
  • The "false" (singing) voice in any human, usually airy and lacking a purity of vowels; created by utilizing the next highest vocal folds above those used for speech and normal range singing. It is commonly confused with the head voice register. 

  • A person who sings in falsetto. 

verb
  • To sing or utter in falsetto. 

rumble

noun
  • A low, heavy, continuous sound, such as that of thunder or a hungry stomach. 

  • A street fight or brawl. 

  • A rotating cask or box in which small articles are smoothed or polished by friction against each other. 

verb
  • To move while making a rumbling noise. 

  • To make a low, heavy, continuous sound. 

  • To fight; to brawl. 

  • to provide haptic feedback by vibrating. 

  • To cause to pass through a rumble, or polishing machine. 

  • To discover deceitful or underhanded behaviour. 

intj
  • An onomatopoeia describing a rumbling noise 

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