What is the term for the material termed as "freight" in shipping documents?

The term "freight" in shipping documents refers to the goods or cargo being transported. While all the options provided relate to different aspects of shipping, the most relevant term for "freight" is "cargo." Cargo encompasses the physical items being transported, which can include hazardous substances or consigned goods.

Hazardous substances are a specific category of cargo that pose risks to health or property during transit, but they do not encompass all freight. Consignments refer to the act of sending goods as well as the items being sent, but it does not specifically denote the material itself. Therefore, while hazardous substances and consignments are associated with shipping documents, they are not synonymous with the term "freight."

In summary, the correct term for material referred to as "freight" is mainly "cargo". However, since hazardous substances and consignments could also be considered as part of the broader context of items being shipped, the inclusive nature of "all of the above" makes each component relevant in the shipping domain, thereby supporting the notion that all these terms can relate to the concept of freight in different contexts.