"Blocking" someone is usually used in the context of preventing another user from contacting you. Think instant messengers or Facebook. "Banning" someone is usually used to indicate a user has been barred by admins from accessing the service.
Is suspended the same as banned?
Suspension vs. Ban: What's the Difference? “Suspension” and “ban” may seem the same, but they're actually a little different. Suspension is most often used to describe short-term penalties that keep you out of the game for a set time, while ban typically refers to when an account is permanently barred from playing.
What happens when you ban a user?
When you ban someone from your Page, they'll still be able to share content from your Page to other places on Facebook, but they'll no longer be able to publish to your Page, like or comment on your Page's posts, message your Page or like your Page.
What gets you banned on Instagram?
Like sexual or inappropriate content, posting content of which the copyright is owned by someone else, will also result in a ban. Copyright infringement is a grey area for Instagram as they usually only ban accounts after they get reported by the copyright owner.