Question

what do you mean by cencorship?

Answer 1

Censorship is the suppression of speech, public communication, or other information, on the basis that such material is considered objectionable, harmful, sensitive, politically incorrect or "inconvenient" as determined by government authorities or by community consensus. 

Answer 2

Censorship blocks something from being read, heard, or seen. If you've ever heard the sound of bleeping when someone is speaking on television, that's censorship.
To "censor" is to review something and to choose to remove or hide parts of it that are considered unacceptable. Censorship is the name for the process or idea of keeping things like obscene word or graphic images from an audience. There is also such a thing as self-censorship, which is when you refrain from saying certain things — or possibly re-wording them — depending on who is listening.