mammogram vs pic

mammogram

noun
  • An X-ray picture of the breasts (mammaries), used to screen for breast cancer. 

pic

noun
  • A picture, especially a photographic image. 

  • A movie. 

  • A Turkish cloth measure, varying from 18 to 28 inches. 

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