ejaculation vs falsetto

ejaculation

noun
  • The uttering of a short, sudden exclamation or prayer, or the exclamation or prayer uttered. 

  • The act of throwing or darting out with a sudden force and rapid flight. 

  • A reflex in human beings and other mammals in response to sexual stimulation involving the forcible ejection from the urethra of, in males, semen; and, in females, vaginal fluid. 

  • The act of ejecting or suddenly throwing, as a fluid from a duct or other body structure. 

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. 

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