| well(noun, deep, hole, hollow, gap) |
| bayou(noun, sound, arm, pool, sea) |
| break(noun, split, division, disagreement, space) |
| estuary(noun, gulf lake) |
| harbor(noun, place, sound, arm, sea) |
| rent(noun, deep, hole, hollow, gap) |
| separation(noun, break, split, division, deep) |
| space(noun, gap) |
| void(noun, deep, opening, space, hole) |
| cave(noun, deep, dip, hole, hollow) |
| crevice(noun, ditch, gap, gorge, valley) |
| disconnection(noun, separation) |
| expanse(noun, deep, hole, hollow, gap) |
| fiord(noun, gulf lake) |
| firth(noun, sound, arm, sea, mouth) |
| gorge(noun, interval) |
| gulch(noun, deep, hole, hollow, interval) |
| notch(noun, interval, gap) |
| shaft(noun, deep, well, hole, hollow) |
| strait(noun, interval, gulf lake) |