| A | B |
|---|
| Conclusion | the end, final part, or final decision |
| Consent | permission; approval, agreement |
| Conserve | to use wisely |
| Contaminate | to make unsuitable or unclean |
| Contrast | to compare or show the differences |
| Convenient | easily accessible, suitable for the need |
| Cope | to deal with something in a calm way |
| Dense | crowded or compact |
| Deplete | to use up |
| Deposit | to place in a specific space |
| Deteriorate | to become worse, wear away |
| Dialogue | conversation between 2 or more people |
| Diligent | persistent or thorough effort |
| Diminish | to make or become less |
| Diversity | variety |
| Dominate | to control |
| Dwell | to live in a place |
| Efficient | achieving maximum productivity |
| Elaborate | having lots of detail |
| Eligible | qualified, meeting requirements |
