SESS is an acronym that stands for 'Substance Use and Substance Use Disorders'. It is a term used to describe the use of drugs, alcohol, and other substances, as well as the associated disorders that can arise from their use. GANJA, WEED, POT, and MTG are all slang terms for marijuana, which is a psychoactive drug derived from the Cannabis plant. It is commonly used recreationally and medicinally, and is known to have both short-term and long-term effects on users.