Final answer:
Households are buyers in the goods and services market, purchasing what firms supply. Conversely, in the labor market, households act as sellers, offering their labor to firms that require it for production.
Step-by-step explanation:
In the goods and services market, households are primarily buyers as they demand goods and services which are supplied by firms or producers. On the other hand, in the labor market, households are generally the sellers because they supply labor to firms or employers who demand this labor for their business operations. Thus, households consume products and offer their labor, thereby playing distinct roles in these two different types of markets.