In Spanish, both words tez and piel are synonymous when referring to skin. However, tez relates more to skin tone and complexion and piel refers more to the tissue organ that surrounds and covers our bodies. So when describing skin colors in Spanish, it would be more apt to use the term tez, like so: tez morena (dark-skinned or tan complexion) tez blanca (white-skinned) tez pálida (pale-skinned) tez oscura (dark-skinned) tez negra (black-skinned).