censor vs redact

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. 

redact

verb
  • To black out legally protected sections of text in a document provided to opposing counsel, typically as part of the discovery process. 

  • To draw up or frame a decree, statement, etc. 

  • To censor, to black out or remove parts of a document while leaving the remainder. 

  • To reduce to form, as literary matter; to digest and put in shape (matter for publication); to edit. 

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