Final answer:
Households are suppliers in the labor market and demanders in the goods market, while firms are demanders in the labor market and suppliers in the goods market. In the financial market, both households and firms can be suppliers or demanders, depending on their actions of saving or borrowing.
Step-by-step explanation:
The critical difference between a firm and a household in various markets is their role as either suppliers or demanders. In the labor market, households act as suppliers of labor, offering their workforce to businesses. Conversely, firms are the demanders as they seek to hire employees. On the other hand, in the goods market, this relationship is reversed: households become demanders, as they are the ones purchasing products and services, while firms are suppliers, selling their produced goods or offering their services. Both households and firms can be either suppliers or demanders in the financial market, depending on whether they are saving or borrowing money. Households supply financial capital when they save or invest, and demand it when they take out loans; similarly, firms can supply financial capital through investments or demand it by seeking external financing.