censor vs revise

censor

verb
  • To review for, and if necessary to remove or suppress, content from books, films, correspondence, and other media which is regarded as objectionable (for example, obscene, likely to incite violence, or sensitive). 

noun
  • One of the two magistrates who originally administered the census of citizens, and by Classical times (between the 8th century B.C.E. and the 6th century C.E.) was a high judge of public behaviour and morality. 

  • A high-ranking official who was responsible for the supervision of subordinate government officials. 

  • A college or university official whose duties vary depending on the institution. 

  • A hypothetical subconscious agency which filters unacceptable thought before it reaches the conscious mind. 

  • An official responsible for the removal or suppression of objectionable material (for example, if obscene or likely to incite violence) or sensitive content in books, films, correspondence, and other media. 

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 censor and revise occurred in a corpus of books? (source: Google Ngram Viewer )