| space(noun, place, gap, emptiness) |
| unbuilt area(expression, area, space, building) |
| lacuna(noun, place, space, gap, emptiness) |
| undeveloped land(expression, area, space, building) |
| blank space(expression, place, space, gap, emptiness) |
| blank gap(expression, place, space, gap, emptiness) |
| blank place(expression, place, space, gap, emptiness) |
| hiatus(noun, place, space, gap, emptiness) |
| abandoned area(expression, location, economy, military) |
| available area(expression, location, economy, military) |
| deserted area(expression, location, economy, military) |
| disengaged area(expression, location, economy, military) |
| empty area(expression, location, economy, military) |
| free area(expression, location, economy, military) |
| free territory(expression, location, economy, military) |
| inactive area(expression, location, economy, military) |
| leisure area(expression, location, economy, military) |
| not lived in area(expression, location, economy, military) |
| open area(expression, location, economy, military) |
| open space(expression, location, economy, military) |