Smoothness refers to the quality of a surface that feels even and free of bumps or roughness. When you touch something smooth, like a glass table or a polished stone, it glides easily under your fingers. This sensation can be pleasing and often indicates that the object has been well-made or cared for. In a broader sense, smoothness can also describe experiences or processes that flow without interruptions. For example, a smooth conversation happens when people communicate easily, without awkward pauses or misunderstandings. Similarly, a smooth ride in a car means the journey is comfortable and free from jolts or bumps.