crow vs falsetto

crow

verb
  • To shout in exultation or defiance; to brag. 

  • To make the shrill sound characteristic of a rooster; to make a sound in this manner, either in gaiety, joy, pleasure, or defiance. 

  • To test the reed of a double reed instrument by placing the reed alone in the mouth and blowing it. 

noun
  • The cry of the bird known in the US as a rooster and in British English as a cockerel. 

  • A gangplank (corvus) used by the Ancient Roman navy to board enemy ships. 

  • The emblem of an eagle, a sign of military rank. 

  • The mesentery of an animal. 

  • A bird, usually black, of the genus Corvus, having a strong conical beak, with projecting bristles; it has a harsh, croaking call. 

  • Any of various dark-coloured nymphalid butterflies of the genus Euploea. 

  • An ill-tempered and obstinate woman, or one who otherwise has features resembling the bird; a harpy. 

  • A black person. 

  • A bar of iron with a beak, crook or claw; a bar of iron used as a lever; a crowbar. 

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 crow and falsetto occurred in a corpus of books? (source: Google Ngram Viewer )