Is vaping safer than smoking? Dr Colin Mendelsohn 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, Are E Cigarettes a Healthy Way to Quit Smoking? WSJ Heated Tobacco vs Vaping: Differences, Benefits, and Which One to Choose