As nouns the difference between limb and legs
is that
limb is a major appendage of human or animal, used for locomotion (such as an arm, leg or wing) or
limb can be (astronomy) the apparent visual edge of a celestial body while
legs is .
As verbs the difference between limb and legs
is that
limb is to remove the limbs from an animal or tree while
legs is (
leg).