girl-genius vs prodigy

girl-genius

prodigy

noun
  • A wonderful example of something. 

  • An extraordinary occurrence or creature; an anomaly, especially a monster; a freak. 

  • An extremely talented person, especially a child. 

  • An amazing or marvellous thing; a wonder. 

How often have the words girl-genius and prodigy occurred in a corpus of books? (source: Google Ngram Viewer )