Industries refer to the production of economic goods – materials or services – in an economy. Industries are divided into four sectors: primary (such as farming), secondary (manufacturing), tertiary (medicine) and quaternary (computer programming). Many countries depend on several industries. A profession is a type of career that requires specialized knowledge and often intensive academic preparation. Selecting a profession can be challenging, so learning all you can about professions that interest you is extremely helpful. That is what this category is all about, so ask and answer questions about professions here.