Tights are a type of hosiery meant to be worn underneath dresses, skirts, and even pants, for added coverage or warmth. They are tight-fitting garments that typically cover your waist to your toe tips, with sheer legs and opaque where it hits the panty. However, there are many types of tights that are made from various materials, colors, and patterns, and are more or less opaque throughout. Leggings, on the other hand, are worn as pants rather than undergarments and are typically worn for working out or lounging.