Vermicompost and Worm Castings, what's the difference?

Vermicompost (Worm Compost) is a process of composting organic food waste using red wigglers and other beneficial microorganisms. Vermicompost contains a combination of worm castings and other organic matter that is fully or partially worm worked.

Worm Castings are the finished product of vermicompost that has been recycled through the worms. They continue to eat and excrete the same organic matter many times over a period of up to 1 year. Finished Castings look like black coffee grounds.