| A | B |
|---|
| cancer | disease caused by the uncontrolled growth of cells |
| nicotine | stimulant that speeds up the heartbeat--addictive |
| tar | thick, dark liquid formed when tobacco burns--causes diseases |
| carbon monoxide | poisonous gas produced when tobacco burns |
| emphysema | disease that occurs when the air sacs of the lungs are damaged or destroyed |
| second hand smoke | tobacco smoke in the air that is inhaled by nonsmokers |
| snuff | finely ground tobacco that is held in the mouth |
| drug | substance other than food that changes the structure or function of your body or mind. |
| medicine | drugs that are used to cure or prevent diseases or other conditions |
| Over-the-counter medicine | medicines that are considered safe enough to be taken without a written order from a doctor |
| Prescription medicine | medicines that can be sold only with a written order from a doctor |
| vaccine | preparations of dead or weakened germs that cause the immune system to produce antibodies |
| antibiotic | medicines that kill or stop the growth of certain germs |
| penicillin | widely used antibiotic |
| side effect | any reaction to a medicine other than the one intended |
| tolerance | develops when the body becomes used to the effects of a medicine and needs greater amounts of the medicine to get the same effect |
| misuse | not taking or using medicines the way the doctor ordered |
| abuse | using drugs in ways that are unhealthy or illegal |
