Fluff, in the context of lightness, refers to materials or substances that are soft, airy, and lightweight. Common examples include cotton, down feathers, and synthetic fibers. These materials are often used in products like pillows, comforters, and stuffed toys, providing comfort and warmth without adding significant weight. The concept of fluffiness is also associated with the texture and appearance of certain foods, such as whipped cream or marshmallows. These items are characterized by their light, airy structure, which contributes to a delightful mouthfeel and enhances the overall eating experience. Fluffiness can evoke feelings of lightness and indulgence.