breast implant vs breast reduction

breast implant

noun
  • A medical prosthesis used to augment, reconstruct, or create the physical form of breasts (the organs on the front of the [typically female] chest). 

breast reduction

noun
  • The operation performed to reduce the volume of breast tissue. 

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