<unk>  is any product that imitates types of<unk>  tobacco (chewing tobacco, dipping tobacco, snuff, snus, etc.) but does not contain either tobacco and nicotine, or tobacco while still retaining nicotine. Like<unk>  cigarettes and electronic cigarettes, they are often used as a tobacco cessation aid.<unk>  use is an alternative to using<unk>  tobacco that may help users quit.
Herbal smokeless tobacco
Dissolvable tobacco
Herbal cigarette
Smokeless tobacco
Electronic cigarette
Roll-your-own cigarette
Heated tobacco product
Coal tar