blepharoplasty vs mammoplasty

blepharoplasty

noun
  • Plastic surgery on the eyelid to improve vision or for cosmetic reasons. 

mammoplasty

noun
  • Plastic surgery of a breast to alter its shape or size. 

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