| A | B |
|---|
| invention | something which has never been made before |
| experiment | a test used to discover something that isn’t known |
| laboratory | a room or building that is used for scientific or medical experiments |
| genius | a very smart person |
| gadget | a small device or tool that has a special purpose |
| electric | using electricity for power |
| signal | an action, movement or sound which gives information or a warning |
| occasional | happening sometimes but not often |
| era | a period of time in history |
| cellar | a room under the ground floor of a building |
| mumble | to speak in a way that is not easy to understand |
| permission | approval to do something |
| conductor | the person on a train or bus that collects money |
| baggage | suitcases or other bags that are used when traveling |
| flame | the fire that you see when something burns |
| disappoint | to feel sad because of not doing or getting something |
| encourgement | the act of giving someone hope or confidence |
| tinker | to make small changes to something to improve or fix something |
| solitude | being alone without other people |
| establish | to start a company or organization |
