| Similarity | Rank | |
|---|---|---|
| natural_system | 0.774 | 34720 |
| natural_ecosystem | 0.684 | 62077 |
| biological_process | 0.672 | 41255 |
| physical_process | 0.670 | 63803 |
| natural | 0.656 | 1659 |
| ecological_system | 0.649 | 67262 |
| natural_phenomenon | 0.648 | 59487 |
| the_biosphere | 0.637 | 42448 |
| chemical_process | 0.636 | 59123 |
| both_natural_and | 0.634 | 82569 |
| evolutionary_process | 0.629 | 64220 |
| human_activity | 0.623 | 16002 |
| anthropogenic | 0.620 | 94954 |
| live_organism | 0.614 | 48514 |
| human_action | 0.607 | 59963 |
| biological_system | 0.605 | 36148 |
| human_intervention | 0.596 | 92052 |
| naturally_occur | 0.596 | 36494 |
| natural_element | 0.594 | 88770 |
| million_of_year | 0.590 | 47068 |
| the_natural_world | 0.590 | 12528 |
| ecosystem_function | 0.588 | 92822 |
| nature | 0.584 | 746 |
| the_natural_environment | 0.582 | 15722 |
| natural_landscape | 0.578 | 44067 |