| Similarity | Rank | |
|---|---|---|
| Prehistoric | 0.839 | 79408 |
| Neolithic | 0.818 | 43645 |
| Antiquity | 0.775 | 72725 |
| Minoan | 0.772 | 85434 |
| Ancient | 0.757 | 11132 |
| prehistoric | 0.756 | 22958 |
| Paleolithic | 0.750 | 60944 |
| pre-historic | 0.749 | 93508 |
| Mesopotamian | 0.742 | 76978 |
| Hellenistic | 0.739 | 54548 |
| Pleistocene | 0.738 | 71860 |
| Anasazi | 0.727 | 91140 |
| Sumerian | 0.721 | 57394 |
| prehistory | 0.721 | 66138 |
| Etruscan | 0.719 | 64908 |
| Medieval | 0.717 | 22625 |
| Devonian | 0.711 | 99765 |
| Cretaceous | 0.705 | 59402 |
| pre-Columbian | 0.703 | 84702 |
| Triassic | 0.697 | 93483 |
| B.C.E. | 0.697 | 76606 |
| Mesoamerican | 0.695 | 96058 |
| Artifacts | 0.691 | 66472 |
| petroglyphs | 0.687 | 77611 |
| Phoenician | 0.687 | 59400 |