| A | B |
| challenge | a test of one's abilities; anything that calls for a special effort |
| dependent | relying on others for aid or support |
| fertile | producing or able to produce much fruit, large crops, or many children |
| peculiar | odd; strange |
| preference | first choice; soemthing preferred |
| principal | most important; main; chief |
| solitary | happening or done alone |
| suitable | right for a certain purpose; proper; fitting |
| surplus | extra; more than what is used or needed |
| transformation | to change in form or appearance |