| 100% | SISTER | 6 | "Sibling" relationship between cities, __ City |
| 55% | RATIO | 5 | Relationship between quantities |
| 55% | RATIO | 5 | Relationship between numbers |
| 55% | CAUSALITY | 9 | Relationship between events |
| 54% | RATIO | 5 | Relationship between two amounts |
| 51% | BIRTHORDER | 10 | Factor in sibling relationships |
| 51% | SHUTTLE | 7 | Flight between nearby cities |
| 50% | OMAHA | 5 | City between Sioux City and Kansas City |
| 50% | SYMBIOSIS | 9 | Relationship between barnacles and whales, e.g. |
| 50% | SYMBIOSIS | 9 | Relationship between barnacles and whales, e.g |
| 50% | BROMANCE | 8 | Close, nonsexual relationship between men |
| 50% | SYMBIOSIS | 9 | Beneficial relationship between two species |
| 50% | LOVEHATE | 8 | Like a relationship between frenemies |
| 50% | RATIO | 5 | Mathematical relationship between two numbers |
| 50% | CROSSREACTIVITY | 15 | Factor in relationships between viruses |
| 50% | SORORAL | 7 | Like some relationships between women |
| 49% | PRIVITY | 7 | Relationship between people with a shared legal interest |
| 49% | CAUSALITY | 9 | The relationship between cause and effect |
| 49% | SYMBIOSIS | 9 | A mutually beneficial relationship between species |
| 49% | ECOLOGY | 7 | The science of relationships between organisms |
| 47% | SYMBIOTIC | 9 | Like a close relationship between two organisms |
| 47% | URBAN | 5 | Like the area between city and farm |
| 47% | LYNN | 4 | City between Boston and Salem |
| 47% | EDINA | 5 | City between Richfield and Minnetonka |
| 47% | OCALA | 5 | City between Gainesville and Orlando |
| 47% | LYNN | 4 | City between Boston and Gloucester |
| 47% | WACO | 4 | City between Dallas and Austin |
| 47% | LYON | 4 | City between Paris and Marseille |
| 47% | BASRA | 5 | City between Kuwait and Iran |
| 47% | WACO | 4 | City between Austin and Dallas |