Tobacco Use Cessation: Ending the TOBACCO habits of smoking, chewing, or snuff use.Tobacco Use Cessation Products: Items used to aid in ending a TOBACCO habit.Cannabis: The plant genus in the Cannabaceae plant family, Urticales order, Hamamelidae subclass. The flowering tops are called many slang terms including pot, marijuana, hashish, bhang, and ganja. The stem is an important source of hemp fiber.Smoking Cessation: Discontinuation of the habit of smoking, the inhaling and exhaling of tobacco smoke.Tobacco: A plant genus of the family SOLANACEAE. Members contain NICOTINE and other biologically active chemicals; its dried leaves are used for SMOKING.Tobacco Use Disorder: Tobacco used to the detriment of a person's health or social functioning. Tobacco dependence is included.Tobacco, Smokeless: Powdered or cut pieces of leaves of NICOTIANA TABACUM which are inhaled through the nose, chewed, or stored in cheek pouches. It includes any product of tobacco that is not smoked.Tobacco Use: Use of TOBACCO (Nicotiana tabacum L) and TOBACCO PRODUCTS.Marijuana Abuse: The excessive use of marijuana with associated psychological symptoms and impairment in social or occupational functioning.Smoking: Inhaling and exhaling the smoke of burning TOBACCO.Tobacco Industry: The aggregate business enterprise of agriculture, manufacture, and distribution related to tobacco and tobacco-derived products.Marijuana Smoking: Inhaling and exhaling the smoke from CANNABIS.