The difference between vaping and smoking lies in the characteristics of the aerosol that's inhaled. 

When smoking a cigarette, the consumer inhales the smoke that’s produced through the process of burning tobacco. 

The term vaping, however, describes the use of a smoke-free product that forms a vapor that is inhaled by a consumer. Examples of such products are e-cigarettes

Instead of burning tobacco, we have found several ways to produce a flavorful nicotine-containing vapor that a consumer can inhale, but that has significantly lower levels of harmful chemicals than cigarettes. However, these products contain nicotine, which is addictive, and are not risk-free. We invite you to read more about science at PMI.