Homonym: Lightness (Brightness)
Lightness refers to the quality of being light in weight or density, making an object easy to lift or move. It can also describe a feeling of buoyancy or ease, often associated with emotions or experiences that are uplifting and free from heaviness.
In physics, lightness is related to the concept of gravity, which affects how we perceive weight. For example, objects like feathers or balloons exhibit lightness due to their low mass compared to denser materials like metal or stone. This property influences various fields, including engineering and design, where weight considerations are crucial.