defloration vs dehymenization

defloration

noun

  • the act of deflowering 

dehymenization

noun

  • The act of deflowering; a venereal depriving of the hymen, and hence, pucelage; defloration. 

  • The surgical or gynecological removal of the hymen; hymenotomy. 

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