bellow vs soprano

bellow

verb
  • To shout in a deep voice. 

  • To make a loud, deep, hollow noise like the roar of an angry bull. 

noun
  • The deep roar of a large animal, or any similar loud noise. 

soprano

verb
  • To sing or utter with high pitch. 

noun
  • Musical part or section higher in pitch than alto and other sections. 

  • Person or instrument that performs the soprano part. 

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