The term "board of trade unit" is often used to refer to a standard unit of trading for commodities such as grain or oil. However, there are several synonyms that can be used to describe this unit of measure. One such term is a "contract," which represents a standardized agreement between two parties to buy or sell a specific commodity at a set price and date. Another synonym is a "futures contract," which is similar to a standard contract but with the added element of speculation on future market prices. Other synonyms include "lot," "unit," and "commodity unit." All of these terms are used interchangeably in the world of commodities trading, making it important for traders to understand their various meanings and applications.