Cargo or freight means goods which people transport, often using a vehicle made for that purpose rather than for passenger service. The vehicle is usually a truck or freighter or cargo aircraft or freight train.
Prefabricated cargo is a type of cargo for transportation in prefabricated batches, which are completed at the expense of piece units and container volumes.
The noun is used as not countable; people will talk about some freight. Today, goods other than bulk cargo are usually packed in shipping containers, which are carried. A place which loads or unloads cargo is usually called a cargo terminal.