censorship vs prohibition

censorship

noun
  • The use of state or group power to control freedom of expression or press, such as passing laws to prevent media from being published or propagated. 

  • The role of the censor (magistrate) in Ancient Rome. 

prohibition

noun
  • A period of time when specific socially disapproved consumables are considered controlled substances. 

  • A law prohibiting the manufacture or sale of alcohol. 

  • An act of prohibiting, forbidding, disallowing, or proscribing something. 

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