Homonym: bulb (Light)
A bulb is a rounded underground storage organ of a plant, typically consisting of a short stem surrounded by fleshy leaves. These leaves store nutrients, allowing the plant to survive adverse conditions, such as winter. Common examples of bulbs include onions, garlic, and tulips.
In a different context, a bulb can refer to an electric light bulb, which is a device that produces light when electricity passes through it. Light bulbs come in various types, including incandescent, fluorescent, and LED, each with different energy efficiencies and lifespans.