To answer your question Steve.

Cannabis is the Latin genus with three primary species,\; sativa, indica and ruderalis; followed by strains (also called varieties) normally a common name like blueberry, i.e. cannabis sativa Maui Wowie

Hemp is commonly used to describe all plants in the genus of cannabis. It's usually describes products made from the stems and seed of the hemp plant.

I hope you're all making wonderful, creative and useful products from your hemp stems, rather then composing or tossing them.