cargo
Synonym discussion
Sense: noun/1
Cargo, freight, shipment, and load all refer to goods being moved, but they differ in scope and context. Cargo is the most specific term, used exclusively for goods carried by large commercial vehicles — ships, planes, trucks, and trains. Freight overlaps heavily with cargo but can also function as a verb (to freight goods) and is more common for train and truck transport than for air or sea travel. Shipment denotes a single consignment sent at a specific time (a shipment of spare parts) and is countable, whereas cargo is usually uncountable. Load is the most general term, covering anything carried by any means, including animals or people (a load of firewood; a heavy load on his back). In formal logistics and customs documents, cargo and freight are the standard choices; for everyday situations, load feels more natural.
Common collocations
Etymology
Cargo entered English in the 17th century from Spanish cargo, meaning 'load' or 'burden'. The Spanish word came from the Latin carricare ('to load a wagon'), which itself derived from carrus ('wagon'). The term was originally used in Spanish shipping, where cargo referred to the loading of a ship, and English adopted it for goods transported by sea, later extending to aircraft and other large vehicles.