| A | B |
|---|
| Dr. | Title for doctor |
| Mr. | Title for a man |
| Mrs. | Title for a married woman |
| Ms. | Title for a married or unmarried woman |
| prototype | an original model used for testing |
| Kevlar | a brand of a special type of strong fiber |
| helium | a gas present in the Earth's atmosphere |
| solo | alone |
| cargo | products carried by ship, plane, or other vehicle |
| flammable | able to catch fire easily |
