What term describes goods that are commonly consumed together, where the demand for one increases the demand for the other?

The term that describes goods that are commonly consumed together, where the demand for one increases the demand for the other, is complementary goods. When two goods are complements, an increase in the price or demand for one often leads to an increase in demand for the other. A classic example of complementary goods is peanut butter and jelly; if the demand for peanut butter rises, consumers are likely to also increase their demand for jelly to enjoy with it.

This relationship implies a direct correlation in consumption patterns, highlighting the interconnectedness of certain products in the market. Understanding this concept is crucial in economics, as it helps analyze consumer behavior and market dynamics effectively. For instance, businesses can leverage the knowledge of complementary goods to strategically price and promote products that enhance each other's sales.