| 100% | COASTLINE | 9 | Boundary strip between land and ocean |
| 57% | COASTLINE | 9 | Boundary between land and water |
| 45% | SEABOARD | 8 | *Where land and ocean meet |
| 45% | SHORELINE | 9 | Demarcation between land and sea |
| 44% | WELT | 4 | Strip between sole and upper |
| 43% | RIPARIAN | 8 | The interface between land and a river or stream |
| 41% | ESTUARIES | 9 | Transition zones between rivers and oceans |
| 40% | RIOGRANDE | 9 | Boundary between the US and Mexico |
| 40% | ATLANTIC | 8 | Ocean between North America and Europe |
| 40% | ATL | 3 | Ocean between Eur. and Amer. |
| 40% | USA | 3 | Land between Can. and Mex. |
| 40% | WRANGEL | 7 | — Island, area of land between the Chukchi Sea and East Siberian Sea in the Arctic Ocean off the NE coast of Russia |
| 39% | WELT | 4 | Strip sewn between shoe upper and sole |
| 39% | ATL | 3 | Ocean between North America and Europe (Abbr.) |
| 39% | IBERIA | 6 | Land between the Atlantic and the Pyrenees |
| 39% | INDIAN | 6 | Ocean between Africa and Australia |
| 39% | CHAD | 4 | Land between Nigeria and Sudan |
| 39% | KOSOVO | 6 | Land between Albania and Serbia |
| 39% | RWANDA | 6 | Land between Uganda and Burundi |
| 39% | SWEDEN | 6 | Land between Norway and Finland |
| 39% | WALES | 5 | Land between England and Ireland |
| 39% | NEPAL | 5 | Land between india and china |
| 39% | RUNWAY | 6 | Take-off and landing strip |
| 38% | SEINE | 5 | Boundary between Paris’s Twelfth and Thirteenth Arrondissements |
| 38% | ATLANTIC | 8 | Ocean that lies between the Americas and Africa |
| 38% | ATL | 3 | Ocean between the US and the UK: Abbr. |
| 38% | SINAI | 5 | Land between the Gulfs of Aqaba and Suez |
| 38% | ATLANTIC | 8 | Ocean between Europe and North America |
| 38% | INDIAN | 6 | Ocean between Africa and South Asia |
| 38% | STYX | 4 | Boundary between the earth and the underworld, in myth |