In commercial terms, container includes "any vessel or enclosure for holding a product used in packaging and shipping”. Things kept inside of a container are protected by being inside of its edifice. The term is most frequently used for devices made from materials that are durable and rigid.
One type of container frequently referred to in operations is a shipping container. A shipping container is a container with strength appropriate to withstand shipment, storage, and handling. They vary from giant reusable steel cases used for intermodal shipments to the grooved boxes. In international shipping trade, "container" or "shipping container" is practically synonymous with "intermodal freight container". An intermodal shipping container is a container that can be moved from one mode of transport to another without the need for unloading and reloading.
Containerization is a system of intermodal freight transport using intermodal containers made of weathering steel. It is is an important cargo-moving technique.
The above is an example of many containers placed at a shipping dockyard