falsetto vs respiration

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. 

respiration

noun
  • An act of breathing; a breath. 

  • Any similar process in an organism that lacks lungs that exchanges gases with its environment. 

  • The process of inhaling and exhaling; breathing, breath. 

  • The process by which cells obtain chemical energy by the consumption of oxygen and the release of carbon dioxide. 

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