| A | B |
| cancer | abnormal growth of cells |
| nicotine | addictive substance in tobacco |
| emphysema | lung disease in which the air sacs become damaged |
| carbon monoxide | poisonous gas produced by tobacco smoke |
| chronic bronchitis | inflammation of the bronchial tubes causing an ongoing cough |
| ulcer | an open sore in the lining of the stomach |
| cardiovascular disease | disease of the heart and blood vessels |
| leukoplakia | white spots on the inside of the mouth that may become cancerous |
| tar | dark, sticky substance in tobacco that causes cancer |
| lungs | organs most affected by tobacco smoke |
| cilia | tiny, hairlike structures that filter ou harmful substances in the respiratory tract |
| atherosclerosis | blockage of the arteries which can be caused by smoking |
| carcinogen | cancer-causing agent |
| ammonia | a cleaning agent found in cigarette smoke |
| formaldehyde | a preservative found in cigarette smoke |
| second hand smoke | smoke breathed from someone else's cigarette |
| stroke | caused by a blockage of blood to the brain |
| snuff | finely ground tobacco that is sniffed or held between the cheek and gum |
| addiction | compulsive use of a habit-forming drug |
| peers | group that often influences young people to begin tobacco use |