SERVERS
On servers, you normally can't break or place blocks (like my friend's Warriors server), but you can play Minecraft according to a theme with other people who enjoy that theme. there is also a chat feature. Most servers have a no cursing rule, but be careful, because not all do. There are also admins. Admins are in creative mode and can break blocks. They are usually someone the host knows in real life.Another special person on the server is an O.P. An O.P can break and place blocks but they are not in creative mode.
MULTIPLAYER WORLDS
On a multiplayer world, you can break blocks and play with friends, you still have chat, but you have to invite them to play with you on your world when they are online.On the XBOX 360, you can play split-screen multiplayer or XBOX LIVE.