New E Cigarette Laws Could Drive Some Users to Smoke More Cigarettes Duke Health Is Vaping Better Than Smoking? American Heart Association Smoking vs Vaping Which Is Worse? Electronic cigarettes (e cigarettes) are sometimes called e cigs, vapes, vape pens, and electronic nicotine delivery systems (ENDS). E cigarettes come in many shapes and sizes. Most e cigarettes contain nicotine. Get the facts about e cigarettes,