A vole is a small rodent resembling a mouse but with a stouter body, a shorter, hairy tail, a slightly rounder head, smaller ears and eyes, and differently formed molars (high-crowned and with angular cusps instead of low-crowned and with rounded cusps). There are approximately 155 species of voles. They are sometimes known as meadow mice or field mice in North America. Vole species form the subfamily Arvicolinae with the lemmings and the muskrats.

(from Wikipedia)

Moles are small cylindrical mammals adapted to a subterranean lifestyle. They have velvety fur; tiny or invisible ears and eyes;^{[clarification needed]} reduced hindlimbs; and short, powerful forelimbs with large paws oriented for digging. The term is especially and most properly used for the true moles, those of the Talpidae family in the order Soricomorpha found in most parts of North America,^[1] Asia, and Europe although may refer to other completely unrelated mammals of Australia and southern Africa which have also evolved the mole body plan; it is not commonly used for some talpids, such as desmans and shrew-moles, which do not quite fit the common definition of “mole”.

(from Wikipedia)