When compared to traditional tinted sunglasses, polarized lenses provide a significant improvement in clarity. While tinted glasses are great for blocking out some of the sun's brightness, it doesn't do anything to fight off glare. You'll still have reduced vision even behind dark tinted lenses.
Tinted lenses are lenses with a pigmented dye in them. There are a variety of tint colors available, with the most common being brown or gray. The color doesn’t have an effect on how much protection you’re getting, but is more based on personal preference.