postoperative vs postsurgery

postoperative

adj
  • Of, relating to, or occurring in the period after a surgical operation. 

noun
  • A transgender person who has undergone gender reassignment surgery. 

postsurgery

adj
  • After surgery. 

adv
  • After surgery. 

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