| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | tunnel construction | New Zealand | Tunnel construction is prevalent in hilly terrains for road and railway networks to improve connectivity. | 1 |
| 2 | tunnels | New Zealand | Tunnels are less common due to the relatively flat terrain and are usually associated with specific infrastructure projects, such as mine shafts and underground utilities. | 1 |
| 3 | underground | New Zealand | There are underground mining operations for extracting resources like coal and gold. | 1 |
| 4 | underground | New Zealand | The term 'underground' often refers to opal mining | 1 |
| 5 | underground tunnels | New Zealand | Used for urban stormwater management and flood control | 1 |