clitoris vs reproductive organ

clitoris

noun
  • A similar erectile sexual organ present in the cloacas of female ratites. 

  • A sensitive elongated erectile organ at the anterior part of the vulva in female humans and mammals, homologous with the penis. 

reproductive organ

noun
  • An organ used for sexual reproduction. 

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