quaver vs squeal

quaver

verb
  • To use the voice in a trembling manner, as in speaking or singing. 

  • To shake in a trembling manner. 

  • To utter quaveringly. 

noun
  • A trembling shake. 

  • an eighth note, drawn as a crotchet (quarter note) with a tail. 

  • A trembling of the voice, as in speaking or singing. 

squeal

verb
  • To scream with a shrill, prolonged sound. 

  • To make a squealing noise. 

  • To give sensitive information about someone to a third party; to rat on someone. 

noun
  • A high-pitched sound, such as the scream of a child or a female person, or noisy worn-down brake pads. 

  • The cry of a pig. 

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