| hole(noun, break, open, flat) |
| opening(noun, break, flat, split) |
| aperture(noun, break, crack, breach) |
| cleft(noun, break, crack, breach) |
| breach(noun, break, open, crack) |
| fissure(noun, break, crack, split) |
| gap(noun, break, open, opening) |
| pinhole(noun, break, opening, space) |
| slit(noun, break, flat, split) |
| eyelet(noun, break, crack, opening) |
| cavity(noun, break, crack, breach) |
| foramen(noun, break, crack, opening) |
| rift(noun, break, split, opening) |
| chasm(noun, break, crack, breach) |
| chink(noun, break, crack, split) |
| fracture(noun, break, crack, split) |
| keyhole(noun, break, crack, opening) |
| vent(noun, break, crack, opening) |
| cranny(noun, break, crack, opening) |
| crater(noun, break, crack, well) |