A commodity is a basic good or raw material that is traded in commerce and is interchangeable with other goods of the same type. In transportation and logistics, the term refers to the specific type of cargo being shipped, such as grain, steel, machinery, or chemicals. Commodities are often classified for tariff, customs, and freight rating purposes using standardized codes. Pricing, handling requirements, insurance rates, and regulatory controls frequently depend on the commodity type. Certain commodities may be hazardous, perishable, or high-value, requiring special documentation, packaging, or transport conditions.