Tobacco is often compared to weed, but they are extremely different from one another.
Tobacco is the common name of several plants in the genus Nicotiana of the family Solanaceae, and the general term for any product prepared from the cured leaves of these plants. More than 70 species of tobacco are known, but the chief commercial crop is N. tabacum.
The main active ingredient in tobacco is nicotine. Nicotine is known to be highly addictive and very difficult to quit.