A Drawing-room car is a luxurious type of railway carriage that was popular in the 19th and 20th centuries. It's designed to be an elegant and comfortable space where passengers can sit and socialize during their train journey. There are several synonyms for this type of carriage, including a salon car, a parlour car, a lounge car, or a first-class car. Each of these synonyms conveys the same sense of luxury and refinement, and they were often used interchangeably in the past. Today, however, these types of carriage are no longer as commonly used, but they remain an important part of the history of rail travel.