railwagens
Railwagen, or railway wagon, is a rail vehicle designed to transport goods on rail networks. They are typically hauled by locomotives, though some designs are self-propelled, and they come in a range of sizes and load capacities. Railwagens are built as open wagons, enclosed box wagons, tanks for liquids, or other specialized forms, and they may be used alone or in long freight consists. The term is used in several languages to describe freight cars in general.
Key types include open wagons for bulk commodities, covered wagons with tarpaulins to protect goods, tank wagons
Historically, railwagens evolved from early wooden freight cars in the 19th century to steel-bodied designs with