A knob is a rounded handle or control that is typically used to open doors, drawers, or cabinets. It can also serve as a control mechanism for various devices, such as ovens or volume controls. Knobs are usually made from materials like metal, plastic, or wood and come in various shapes and sizes to suit different applications. In addition to their practical uses, knobs can also enhance the aesthetic appeal of furniture and fixtures. Decorative knobs are often used in interior design to add style and personality to spaces. They can be found in homes, offices, and public buildings, making them a common feature in everyday life.