| Similarity | Rank | |
|---|---|---|
| epoch | 0.796 | 27305 |
| eras | 0.793 | 27467 |
| civilisations | 0.781 | 60506 |
| civilizations | 0.779 | 19966 |
| millennia | 0.730 | 24264 |
| millenia | 0.719 | 80184 |
| cosmological | 0.717 | 50441 |
| discontinuities | 0.712 | 94239 |
| aeons | 0.696 | 92032 |
| prehistory | 0.695 | 66138 |
| civilization | 0.690 | 8055 |
| antiquity | 0.689 | 25157 |
| mythologies | 0.687 | 67678 |
| civilisation | 0.687 | 28525 |
| conceptions | 0.677 | 31903 |
| Hellenistic | 0.677 | 54548 |
| phenomena | 0.676 | 9556 |
| precession | 0.676 | 81518 |
| transformations | 0.676 | 20754 |
| pre-industrial | 0.672 | 85524 |
| pre-historic | 0.672 | 93508 |
| universals | 0.667 | 98443 |
| cosmology | 0.667 | 37648 |
| centuries | 0.661 | 4516 |
| chronology | 0.660 | 31178 |