As nouns the difference between limb and lith
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
lith is a limb; any member of the body or
lith can be owndom; property or
lith can be a gate; a gap in a fence.
As a verb limb
is to remove the limbs from an animal or tree.