Why is money not considered to be a capital resource in economics? Why is entrepreneurial ability considered a category of economic resource, distinct from labor? What are the major functions of the entrepreneur?

Money is not considered a capital resource because money is not productive. It provides access to resources but itself does not directly contribute to the production of goods and services.

Entrepreneurial ability does directly produce goods and services; it organizes the resources that do. Entrepreneurs are risk-takers.