What's the difference between and nymph and a pupa?

What is the difference between larva and pupa? The Difference in Larva and Pupa ... The larva is generally a worm-like creature that emerges from the egg, the first life stage. The pupa is the seemingly sedentary, transformative form following the larval stage. Going through both stages to reach adulthood is defined as complete metamorphosis in insects.