Servers
The game runs on multiple "game servers", each with a unique name for identification. These names were originally the deities of the world of Norrath. In technical terms, each "game server" is actually a cluster of server machines.
Once a character is created, it can only be played on that server unless the character is transferred to a new server by the customer service staff, generally for a fee.
Each server often has a unique community and people often include the server name when identifying their character outside of the game.
Read more about this topic: EverQuest