exhale vs falsetto

exhale

noun
  • An exhalation. 

verb
  • To draw out; to cause to be emitted in vapour. 

  • To pass off in the form of vapour; to emerge. 

  • To expel (something, such as tobacco smoke) from the lungs by action of the diaphragm. 

  • To expel air from the lungs through the nose or mouth by action of the diaphragm, to breathe out. 

  • To emit (a vapour, an odour, etc.). 

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. 

verb
  • To sing or utter in falsetto. 

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