falsetto vs lamentation

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. 

verb
  • To sing or utter in falsetto. 

lamentation

noun
  • lamentatio, (part of) a liturgical Bible text (from the book of Job) and its musical settings, usually in the plural; hence, any dirge 

  • Specifically, mourning. 

  • The act of lamenting. 

  • A sorrowful cry; a lament. 

  • A group of swans. 

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