SimilarityRank
manmade 0.977 39540
artificial 0.707 5568
natural 0.678 530
volcanic 0.638 15287
synthetic 0.627 7219
anthropogenic 0.622 46957
biosphere 0.618 44340
earth's 0.614 19250
reefs 0.612 16565
naturally-occurring 0.611 94684
lagoons 0.602 39974
uncontaminated 0.602 86508
ecological 0.602 9588
nature's 0.601 22532
freshwater 0.600 17722
impervious 0.599 36679
oceans 0.596 13547
impermeable 0.594 70228
tsunamis 0.593 54433
rainforests 0.591 35372
pristine 0.588 12617
synthetics 0.587 53667
sinkholes 0.585 93879
coral 0.584 11031
volcanoes 0.583 26303