A "surface texture" refers to the characteristics of a material's surface. There are several synonyms for this term, each with their own nuances. For example, "finish" can be used to describe the surface appearance of a material or product. "Grain" refers to the pattern or texture of an organic material, such as wood or leather. "Coarse" or "rough" describe a surface that is not smooth or even, while "smooth" or "polished" indicate a surface that is without texture or blemish. "Tactile" describes a surface that is designed to be touched or felt, while "matte" or "glossy" refers to the level of sheen or reflectivity of a surface.