Texture refers to the surface quality of an object that can be perceived through touch or sight. There are real textures that can be felt and simulated textures that create the visual illusion of texture. Texture can have various qualities like smooth, rough, soft, or hard. It can be used descriptively or symbolically in design and can evoke different associations and memories for individuals based on their experiences. Texture appeals to multiple senses and can have functional or spatial purposes in design.