falsetto vs screech

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. 

screech

verb
  • To make such a sound. 

  • To travel very fast, as if making the sounds of brakes being released. 

noun
  • A form of home-made rye whiskey made from used oak rye barrels from a distillery. 

  • A high-pitched strident or piercing sound, such as that between a moving object and any surface. 

  • Newfoundland rum. 

  • A harsh, shrill cry, as of one in acute pain or in fright; a shriek; a scream. 

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