Censorship is the suppression of speech period. It can be done by the government, private institutions or even individuals. You can even censor yourself ( self-censorship ).

https://en.wikipedia.org/wiki/Censorship

The difference is that law generally allows private censorship but doesn't generally allow public censorship.

I don't know for sure, but I'd be willing to bet a bit that if some prince from a land far away bought out Twitter and took to moving the workforce ideology to the right and censored, I mean curated, left leaning ideology from the platform a good number of people would cry foul.

by foreign land, do you mean, for example, Australia, and by prince, do you mean, for example, a tabloid magnate?

Not the person you are asking but it seems pretty clear who is being referenced here: https://en.wikipedia.org/wiki/Al-Waleed_bin_Talal