Gravity-flush toilets are a common type of toilet that use the force of gravity to move waste from the bowl to the sewer system. When the toilet is flushed, water from the tank flows into the bowl, creating a siphoning effect that pulls waste away. This design is simple and effective, requiring minimal maintenance. These toilets typically have a larger trapway, which helps prevent clogs and allows for efficient waste removal. Gravity-flush toilets are often more affordable and easier to install compared to other types, such as pressure-assisted toilets or dual-flush toilets. They are widely used in homes and public restrooms.