1. Three economic classifications are identical.
The nomenclature of commodities is the same as the nomenclature of commodity exchange and the nomenclature of prices, when the latter word designates the values of economic exchange.
2. One of the differences between capital (standing advance) and credit (temporary advance) is that only the former is essential financing for the creation and operation of a business.
This is why a price theory that does not have in its elements a theory of the normal rate of return on savings in capital is defective. The provision of the financing essential to the creation and operation of an enterprise is part of the general scheme of economic exchange. This is particularly evident in the case of commercial enterprises which, by their articles of association, make it their rule: to you, the providers of my permanent financing, the remuneration of your service by a share of my profits. The rule to which credit institutions adhere is just as logical and necessary: to you, my customers, the repayable advances that I provide you, to me the interest with which you remunerate my service.