The term "buffet car" refers to a dining car on a train, where passengers can purchase meals or refreshments during their journey. However, there are various synonyms for this term that are used around the world. In the United States, it is often called a "dining car" or "restaurant car", while in the United Kingdom, it is referred to as a "restaurant carriage" or "dining carriage". In Australia and New Zealand, it is known as a "diner" or "dining car", while in Germany it is called a "speisewagen". Regardless of the name, the buffet car is a popular choice for train travelers looking for a meal or snack while on the move.