- 2Betekenis: naturecave cavern cove burrow denhole hovel shelter tunnel
- 3Betekenis: cavecavern cove hole dentunnel hovel shelter burrow
- 4Betekenis: dig outdig excavate burrow minetunnel bore undermine
- 5Betekenis: subterraneousburied covered tunnel mine underground
- 6Betekenis: drillpenetrate pierce perforate tunnel bore
- 7Betekenis: passageduct well pipetube tunnel shaft
- 8Betekenis: hole in the groundhole cavity pit minehollow quarry tunnel excavation
- 9Betekenis: placecave cavern cove burrow dentunnel hovel shelter hole