revise vs undergo a sea change

revise

verb
  • To review, alter and amend, especially of written material. 

  • To look over again (something previously written or learned), especially in preparation for an examination. 

noun
  • A second proof sheet; a proof sheet taken after the first or a subsequent correction. 

  • A review or a revision. 

undergo a sea change

How often have the words revise and undergo a sea change occurred in a corpus of books? (source: Google Ngram Viewer )