falsetto vs guff

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. 

guff

verb
  • To mislead. 

  • To fart. 

noun
  • A fart; act of breaking wind. 

  • Nonsensical talk or thinking. 

  • Superfluous information. 

  • Insolent or otherwise unacceptable remarks. 

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