exhalation vs falsetto

exhalation

noun
  • That which is exhaled, or which rises in the form of vapor, fume, or steam 

  • A bright phenomenon; a meteor. 

  • The act or process of exhaling; breathing out 

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. 

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