Precisely. If one pays me $100 to not say "cucumber" today, thats not censorship. If one tells me not to say "heil hitler!" at their garden party, thats also not censorship. Surely there are other garden parties where such statements are welcome - Or I am free to throw my own.

Now, if I can't say "cucumber" at all, in any context, whether I entered in any agreement or not - thats censorship.