censor vs ignorance

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. 

ignorance

noun
  • The condition of being uninformed or uneducated; lack of knowledge or information. 

  • Sins committed through ignorance. 

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