| Similarity | Rank | |
|---|---|---|
| man-made | 0.977 | 16405 |
| artificial | 0.709 | 5568 |
| natural | 0.701 | 530 |
| volcanic | 0.658 | 15287 |
| reefs | 0.650 | 16565 |
| biosphere | 0.635 | 44340 |
| anthropogenic | 0.634 | 46957 |
| shorelines | 0.630 | 48633 |
| lagoons | 0.629 | 39974 |
| freshwater | 0.629 | 17722 |
| sinkholes | 0.627 | 93879 |
| impervious | 0.626 | 36679 |
| rainforests | 0.623 | 35372 |
| earth's | 0.620 | 19250 |
| synthetic | 0.620 | 7219 |
| coral | 0.620 | 11031 |
| nature's | 0.618 | 22532 |
| naturally-occurring | 0.616 | 94684 |
| tsunamis | 0.615 | 54433 |
| ecological | 0.614 | 9588 |
| ocean | 0.609 | 3836 |
| lakes | 0.609 | 8106 |
| coastlines | 0.609 | 48338 |
| oceans | 0.609 | 13547 |
| dams | 0.606 | 18628 |