countertenor vs soprano

countertenor

noun
  • a part or section performing a countermelody against the tenor or main part 

  • male singing voice far higher than the typical male vocal range 

  • adult male singer who uses head tone or falsetto to sing far higher than the typical male vocal range 

soprano

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

  • Person or instrument that performs the soprano part. 

verb
  • To sing or utter with high pitch. 

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