debase vs revise

debase

verb
  • To lower in character, quality, or value; to degrade. 

  • To lower the value of (a currency) by reducing the amount of valuable metal in the coins. 

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. 

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