| eyelet(noun, break, crack, opening) |
| foramen(noun, break, crack, opening) |
| hollow(noun, break, place, position) |
| interruption(noun, break, crack, split) |
| interval(noun, break, crack, split) |
| keyhole(noun, break, crack, opening) |
| orifice(noun, break, crack, rest) |
| outlet(noun, break, crack, opening) |
| perforation(noun, break, crack, opening) |
| pocket(noun, break, crack, opening) |
| space(noun, break, crack, split) |
| vacuity(noun, break, crack, rest) |
| vent(noun, break, crack, opening) |
| blank(noun, break, crack, rest) |
| difference(noun, break, crack, rest) |
| disagreement(noun, break, crack, split) |
| disparity(noun, break, crack, rest) |
| divergence(noun, break, crack, rest) |
| divide(noun, break, crack, rest) |
| inconsistency(noun, break, crack, rest) |