| A | B |
| locomotives | self-propelled engines used to pull trains |
| rugged | rough and uneven |
| inspired | to guide with positive influence |
| transcontinental | crossing to the other side of the continent |
| cowcatcher | wide pointed part on the front of a train used to push cows out of its way |
| telegraph | communicating by wire or radio |
| roamed | traveled without a purpose |