| depression(noun, drop, decline, fall, dish) |
| cavity(noun, impression, dip, void, hollow) |
| dent(noun, depression, impression, dip, hollow) |
| dip(noun, drop, decline, fall, depression) |
| hole(noun, drop, decline, fall, depression) |
| hollow(noun, drop, area, decline, fall) |
| indentation(noun, depression, impression, dip, hollow) |
| dimple(noun, depression, impression, dip, hollow) |
| basin(noun, drop, area, decline, fall) |
| pit(noun, depression, impression, dip, hollow) |
| impression(noun, depression, dip, hollow, pocket) |
| incurvation(noun, bend, bow, loop, arch) |
| concaveness |
| incurvature(noun, bend, bow, loop, arch) |
| concave |
| crater(noun, depression, impression, dip, hollow) |
| dint |
| hollowness |
| bowl(noun, depression, dish, impression, sink) |
| cave(noun, receptacle, interiority) |