accuse vs falsetto

accuse

verb
  • to make an accusation against someone 

  • to find fault with, blame, censure 

  • to charge with having committed a crime or offence 

falsetto

verb
  • To sing or utter in 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. 

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