Both! In western countries, many people or things have nicknames or abbreviations. Barcelona club is indeed called Barc for short in Catalonia. When Alexandero Del Pierro, a famous former Italian international, played in Juventus, many teammates called him Ale, which was the first three letters of her name. In Britain and the United States, quite a few people call each other by the combination of the first letter of their first name and last name. For example, michael owen, a former British international, is called "Mo" by his teammates, and the hero of Grand Theft Auto is called CJ by his friends.