Absorbent refers to a material's ability to soak up liquids or moisture. Common absorbent materials include sponges, paper towels, and cotton. These materials have porous structures that allow them to capture and retain water or other fluids effectively. In various applications, absorbent materials are essential for cleaning, medical uses, and even in construction. For example, diapers use absorbent materials to keep moisture away from the skin, while absorbent pads are used in laboratories to manage spills. Their effectiveness depends on factors like thickness, density, and the type of liquid being absorbed.