A water closet, commonly known as a toilet, is a plumbing fixture used for the disposal of human waste. It typically consists of a bowl that holds water and a seat for comfort. When the user flushes the toilet, water from the tank flows into the bowl, carrying waste through a drainpipe to a sewage system or septic tank. Water closets can vary in design and functionality, with some featuring advanced technology like automatic flushing and bidet functions. They are an essential part of modern sanitation, promoting hygiene and convenience in homes, public restrooms, and commercial buildings.