breathe vs falsetto

breathe

verb
  • To give an impression of, to exude. 

  • To inspire (scripture). 

  • To take in needed gases and expel waste gases in a similar way. 

  • To live. 

  • To exhale or expel (something) in the manner of breath. 

  • To exercise; to tire by brisk exercise. 

  • To inhale (a gas) to sustain life. 

  • To draw air into (inhale), and expel air from (exhale), the lungs in order to extract oxygen and excrete waste gases. 

  • To passionately devote much of one's life to (an activity, etc.). 

  • To whisper quietly. 

  • To expel air from the lungs, exhale. 

  • To pass like breath; noiselessly or gently; to emanate; to blow gently. 

  • To draw something into the lungs. 

  • To exchange gases with the environment. 

  • To stop, to give (a horse) an opportunity to catch its breath. 

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. 

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