falsetto vs whiz

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. 

whiz

noun
  • A whirring or hissing sound (as above). 

  • Pickpocketing. 

  • An act of urination. 

  • Amphetamine. 

  • Someone who is remarkably skilled at something. 

verb
  • To urinate. 

  • To make a whirring or hissing sound, similar to that of an object speeding through the air. 

  • To rush or move swiftly with such a sound. 

  • To throw or spin rapidly. 

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