The term 'bulb unit' refers to the components of a light bulb. The first component is 'lumen, ' which is a unit of measurement for the amount of light emitted from a source. The second component is 'watt, ' which is a unit of power that measures the rate at which energy is used. The third component is 'CLOVE, ' which is a type of bulb that is shaped like a garlic CLOVE and is commonly used in decorative lighting.