Cannabis is a plant which is popularly called as marijuana and its other various forms are hashish and hash oil. Hashish is one of the resins made from cannabis plants. Cannabis is now one of the fastest growing businesses in the world. Marijuana is a plant which is grown on any climatic conditions. Marijuana is collected from the dried leaves and flowers of the cannabis plants. Marijuana is generally used as a drug and is used in hand rolled cigarettes. The various names for cannabis are grass, pot, dope, smoke and many more.