A pirate that is paid or licensed by a country to plunder and loot is a Privateer or Corsair. This license is called a Letter of Marque.
Other terms for pirate include: Buccaneer, Freebooter, Swashbuckler or Sea Dog. When the player creates a pirate character with a customized name, they will be listed as one of these synonyms until the name has been approved.
In Pirates of the Caribbean Online, "pirate" also refers to a player's character (avatar) or any other player or character - since the players are all portraying pirates.
In this Wiki, references to the player character may be listed as 'the pirate'.