Hemp and marijuana are two popular names for the cannabis plant. The word cannabis often brings to mind images of a burning joint or a bong filling up with white smoke.Most of the time, the term wouldn’t be equated with plant-based plastics, durable paper or military grade fabric.ny cannabis with higher THC levels is considered marijuana instead. In comparison, medical marijuana produces anywhere between 5-20% THC on average, with prize strains tipping the scale at 25-30% THC. Hemp and marijuana plants contain another important cannabinoid: CBD.