- 2Betekenis: holehollow depression basin indentationcrater bowl recess cavity
- 3Betekenis: valleydepth gulf pit shaftwell crater chasm abyss
- 4Betekenis: channelhollow groove furrow dipcup crater trough
- 5Betekenis: excavationpit hole hollow craterlode shaft quarry
- 6Betekenis: thinghole cavity depression basin indentationcrater bowl recess hollow