| 100% | MONTE | 5 | Town and resort that forms part of the principality of Monaco |
| 54% | ODER | 4 | River that forms part of the border between Germany and Poland |
| 54% | ORINOCO | 7 | River that forms part of the border between Colombia and Venezuela |
| 54% | MOSELLE | 7 | River that forms part of the border between Germany and Luxembourg |
| 54% | DOURO | 5 | River that forms part of the border between Spain and Portugal |
| 54% | RIONEGRO | 8 | River that forms part of the border between Colombia and Venezuela |
| 53% | ELBE | 4 | River that formed part of the border between East and West Germany |
| 51% | DOURO | 5 | River that forms part of the border between Spain and Portugal before flowing west to the Atlantic |
| 47% | ULNA | 4 | Bone that forms part of the forearm |
| 46% | DEE | 3 | River that forms part of the England/Wales boundary |
| 46% | GUADIANA | 8 | River that forms part of the Spain-Portugal border |
| 46% | RHINE | 5 | River that forms part of the France/Germany border |
| 46% | WABASH | 6 | River that forms part of the Illinois-Indiana border |
| 46% | URALS | 5 | Mountains that form part of the Asia/Europe boundary |
| 46% | YALU | 4 | River that forms a large part of the border between North Korea and China |
| 46% | NIAGARA | 7 | River that forms part of the U.S.-Canada border |
| 46% | PAIGNTON | 8 | Coastal town in South Devon that with Torquay and Brixham forms the borough of Torbay |
| 45% | IOWA | 4 | The Mississippi and Missouri rivers form parts of its border |
| 45% | MAMORE | 6 | River rising in the Andes that forms part of the Bolivia-Brazil border |
| 44% | ARAS | 4 | River forming part of the border between Azerbaijan and Iran |
| 44% | URAL | 4 | River forming part of the boundary between Europe and Asia |
| 44% | MOSELLE | 7 | River forming part of the border between Germany and Luxembourg |
| 44% | OOHED | 5 | Part of the expression that includes '... and aahed' |
| 44% | KASAI | 5 | Tributary of the Congo River that forms part of the border between the Democratic Republic of the Congo and Angola |
| 44% | TAMAR | 5 | River that forms most of the border between Cornwall and Devon |
| 43% | RETINA | 6 | Part of the eye that has rods and cones |
| 43% | THROAT | 6 | Part of the neck that helps swallow and speak |
| 43% | RETINA | 6 | Part of the eye that perceives light and color |
| 43% | SNAKE | 5 | — River, US watercourse forming part of the border between Idaho and Oregon |