Hemp (Hanf in German) is a plant botanically known as Cannabis sativa.
There are many different varieties of Cannabis and they include both, the commercial strains and strains or varieties that are of the immense medicinal value i.e. those that contain both cannabinoids - the CBD ones and the psychoactive THC in higher percentages.
Marijuana is actually a Mexican slang term. This term became very derogatory and it was created on purpose, by very influential groups and institutions that were trying to demonize this wonderful plant.
So, Marijuana usually denotes the Cannabis indica, but in fact all Cannabis plants have been demonized, so some people call all strains of Cannabis Marijuana.
Cannabis indica contains higher amounts of beneficial cannabinoids (plus terpenes and flavonoids). For that reason it has been used medicinally for thousands of years.
Not that long ago, about hundred of years back, it was a part of many medicines, as you can see on the photo below:
Luckily, there has been a trend recently in many countries to reverse the ban, in recognition of the medicinal properties of this wonderful plant.
What you do with this plant, it is totally up to you.
The same substances behave quite differently when juiced raw, or when they are turned into pure Cannabis oil. And quite differently, when smoked.
Here in Germany, as well as almost in the entire EU, legally you can only get the strains with THC amount that stays below 0.5%. But unfortunately with such low THC level, the CBD also stays quite low.
We use commercial Hemp to make our Cannabis Kombucha.
There's a lot of information about Cannabis coming out now. Here's just one pictorial from Herbal Dispatch.
Disclaimer: All medical information in this post is merely information & not advise. If you need medical advice, please consult your doctor or other appropriate medical professional.