What's the difference between bulk cargo and groceries in shipping?

Bulk cargo mainly refers to unpackaged bulk cargo such as coal, loose mineral powder, feldspar sand and lithium ore.

But it usually does not include bulk crude oil and other bulk liquid and gas chemicals.

Grocery: also known as groceries. Usually packaged goods. Such as goods packed in boxes or barrels.

In addition, before the container appeared, all dry goods and groceries were transported by bulk carriers. His loading and unloading can be said to be completely manual, and it can't be loaded and unloaded in rainy days. At present, there are only international trade such as ore, coal, grain, fertilizer and steel, and bulk commodities are shipped by bulk carriers. There are also domestic inland river routes. The freight of bulk cargo is charged according to the grade and volume/ton of the cargo, so the freight of bulk cargo is not necessarily lower than that of container.