falsetto vs squeak

falsetto

verb
  • To sing or utter in falsetto. 

noun
  • A person who sings in falsetto. 

  • 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. 

squeak

verb
  • To speak or sound in a high-pitched manner. 

  • To emit a short, high-pitched sound. 

  • To inform, to squeal. 

  • To empty the pile of 13 cards a player deals to oneself in the card game of the same name. 

  • To win or progress by a narrow margin. 

noun
  • A short, high-pitched sound, as of two objects rubbing together, or the sounds made by mice and other small animals. 

  • A card game similar to group solitaire. 

  • A narrow squeak. 

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