A finger is a prominent digit on the forelimbs of most tetrapod vertebrate animals, especially those with prehensile extremities (i.e. hands) such as humans and other primates.

A digit is one of several most distal parts of a limb, such as fingers or toes, present in many vertebrates.

The extremity of each arm, known as the hand, has five opposable digits known as fingers (made up of metacarpal and metatarsal bones for hands and feet respectively) and specializes in intrinsic fine motor skills for precise manipulation of objects.

A digit includes the hand bones but these bones are not separated into individual appendages like a finger. Instead it is contained within a single structure – the hand. Tendons attached to muscles within the hand and forearm are responsible for the different movements of the fingers.