Narcotic drugs are substances that can cause changes in mood, behavior, and consciousness. Morphia (7 letters) is a synthetic opioid drug used to treat moderate to severe pain. HEMP (4 letters) is a plant-based drug derived from the Cannabis sativa plant, which has been used for centuries as a recreational drug and for medicinal purposes. OPIATE (6 letters) is a term used to describe any drug derived from OPIUM, including MORPHINE and codeine. OPIUM (5 letters) is a narcotic drug made from the poppy plant and is the source of many opiates. MORPHINE (8 letters) is an OPIATE drug derived from OPIUM and is used to treat severe pain.