| Similarity | Rank | |
|---|---|---|
| civilizations | 0.945 | 19966 |
| civilisation | 0.915 | 28525 |
| civilization | 0.861 | 8055 |
| millenia | 0.834 | 80184 |
| millennia | 0.799 | 24264 |
| mythologies | 0.788 | 67678 |
| epochs | 0.781 | 73308 |
| prehistory | 0.780 | 66138 |
| empires | 0.775 | 28124 |
| city-states | 0.771 | 90217 |
| pre-historic | 0.769 | 93508 |
| Sumerians | 0.762 | 96259 |
| centuries | 0.758 | 4516 |
| antiquity | 0.754 | 25157 |
| Neolithic | 0.752 | 43645 |
| pre-modern | 0.751 | 96527 |
| pre-Christian | 0.751 | 79257 |
| ancient | 0.744 | 2250 |
| kingdoms | 0.743 | 23519 |
| Mesopotamian | 0.737 | 76978 |
| Aryans | 0.737 | 78631 |
| prehistoric | 0.734 | 22958 |
| cultures | 0.733 | 4691 |
| Mesopotamia | 0.730 | 43120 |
| conquerors | 0.728 | 52121 |