The answer to 'how does sink work' is that a sink is a plumbing fixture used for washing hands, dishes, and other tasks. It is typically made of porcelain, stainless steel, or another durable material and is connected to the home's water supply and drainage system. When you turn on the faucet, water flows into the sink basin, and when you pull the drain plug, the water drains out through the pipes below the sink.
The key components of a sink include the basin, faucet, drain, and plumbing connections. The basin holds the water, the faucet controls the water flow, the drain allows the water to exit, and the plumbing connections link the sink to the home's water and sewer lines. Proper installation and maintenance of these components are important for the sink to function properly.