| A | B |
| a group of people who have high social or economic status | elite |
| an exertion of force; the ability of an object to do work or to make somehting happen; the power or capacity for activity' the ability to cause a change in matter' the result of force moving an object | Energy |
| to make sure that something will happen; to make certain | ensure |
| a long journey that has been organized for a particular purpose | Expedition |
| a force that resists movement between two objects that are touching ' a state of conflict between persons | friction |
| a forceful consequence; force of one body hitting another | impact |
| Communication between two or more things; objects acting on or influencing each other | Interaction |
| Rebellion against the leader of one's group; deliberate refusal to obey orders given by those in command, especially sailors | Mutiny |
| a tall pointed peak such as a mountaintop; the highest point of achievement | Pinnacle |
| easy to carry and move | Portable |
| something that can happen, possibility or capability, Energy stored in an object or material | Potential |
| the steps involved in completing something, to treat or prepare by some special method | Process |
| something a person does to relax and have fun | Recreation |
| to hang freely to hang by a support from above to stop for a time | suspend |