Final answer:
Economists use the term 'comparative advantage' when describing the opportunity cost of two producers, distinguishing it from 'absolute advantage,' which is about the quantity of goods produced per labor unit.
Step-by-step explanation:
When describing the opportunity cost of two producers, economists use the term comparative advantage. Absolute advantage refers to the ability of an economy or individual to produce more of any good per unit of labor than another country or individual. On the other hand, a comparative advantage is the ability to produce a good at a lower opportunity cost than others. For example, if Zambia can produce copper with less labor compared to corn, it has a comparative advantage in copper, and thus, the opportunity cost of producing a ton of copper is the amount of corn that could have been produced using the same resources.