sough vs squeal

sough

noun
  • A murmuring sound; rushing, rustling, or whistling sound. 

  • A gentle breeze; a waft; a breath. 

  • A (deep) sigh. 

  • A small drain; an adit. 

verb
  • To make a soft rustling or murmuring sound. 

  • To drain. 

squeal

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. 

verb
  • To make a squealing noise. 

  • To scream with a shrill, prolonged sound. 

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

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