This act, along with its later amendments in 1936 and 1975, subjects commodities, commodity futures, and option trading to federal supervision and restricts trading to futures exchanges

just that; an exchange. Maybe a sale?

its called a trade

The Stock Exchange

The Commodities Exchange

The Energy Exchange

Information about commodities exchange is best found on a government website. There you will find accurate information about where to find them and what the laws are dealing with commodities exchanges.

To traffic or trade, by exchanging one commodity for another, in distinction from a sale and purchase, in which money is paid for the commodities transferred; to truck., To trade or exchange in the way of barter; to exchange (frequently for an unworthy consideration); to traffic; to truck; -- sometimes followed by away; as, to barter away goods or honor., The act or practice of trafficking by exchange of commodities; an exchange of goods., The thing given in exchange.