Cannabis and hops are related. Both come from the family cannabinaceae. They do share some physical traits such as appearance and aroma, howeber they differ on a chemical level. Both produce terpenes; cannabis terpenes are psychoactive where hop terpenes are purely for flavour, aroma and bitterness.
Hemp is a variety of the Cannnabis Sativa plant and has high concentrations of CBD, the non psychoactive cannabinoid.
Hops and Hemp oils have been shown to help in relaxation when consumed in moderate levels.