Having two faucets in a kitchen sink, with one being larger and the other smaller and stationary, is often seen in older homes and is typically referred to as a "bridge faucet" design. The larger faucet is used for hot and cold water control, while the smaller stationary faucet is typically used for filtered or purified water. This setup allows for separate access to filtered water without needing to use the main faucet. However, it's worth noting that kitchen sink designs and configurations can vary, and not all kitchens have this particular setup.