| A | B |
|---|
| nicotine | a very addictive chemical in tobacco products; produced by tobacco plants to act as an insecticide |
| smokeless tobacco | tobacco that is chewed, placed between the lower lip and teeth, or sniffed through the nose |
| chewing tobacco | "dip" or "chew;" poor quality, ground tobacco leaves mixed with flavoring, preservatives, and other chemicals |
| snuff | finely ground, powdered tobacco |
| stimulant | drugs that increase the activity of the nervous system |
| tar | the dark, sticky substance that forms when tobacco burns |
| carcinogen | cancer-causing agents |
| carbon monoxide | odorless, poisonous gas produced when substances are burned |
| chronic obstructive pulmonary disease (COPD) | a disease that results in gradual loss of lung function |
| chronic bronchitis | the airways are constantly inflamed and clogged with mucus |
| emphysema | a disorder in which alveoli in the lungs can no longer function properly |
| leukoplakia | white patches on the tongues or the lining of the mouth |
| mainstream smoke | exhaled from a smoker's lungs |
| sidestream smoke | goes into the air directly from the cigarette |
| secondhard smoke | environmental tobacco smoke |
| nicotine substitute | a product that contains nicotine, but not the other harmful chemicals found in tobacco |
