| A | B |
|---|
| safety | freedom from danger, risk, or injury |
| accident | any suddenly occurring, unintentional event that causes injury or property damage |
| hazard | source of danger |
| carelessness | failure to think before one acts, failure to pay attention |
| flammable | capable of being easily ignited and burning quickly |
| combustible | capable of bursting into flames |
| extinguish | put out a fire; to cause to cease burning |
| corrosive | tending to weaken or destroy, especially through chemical action |
| class A | fires that occur in ordinary combustible material |
| class C | fires that occur in or near electrical equipment such as motors, switchboards, computers, and electrical wiring |
| class B | fires that occur with flammable liquids such as gasoline, grease, paint, and solvent |
| class D | fires that occur with combustible metals such as iron, magnesiu, sodiu, and potassium |
