| Similarity | Rank | |
|---|---|---|
| environmental_protection | 0.719 | 10347 |
| environmental_regulation | 0.672 | 42752 |
| wastewater_treatment | 0.668 | 51114 |
| water_pollution | 0.667 | 34005 |
| pollution | 0.659 | 4581 |
| environment_protection | 0.649 | 74683 |
| pollutant | 0.636 | 14162 |
| waste_management | 0.632 | 16497 |
| environmental_management | 0.626 | 28442 |
| water_treatment | 0.622 | 44454 |
| solid_waste_management | 0.617 | 88395 |
| reduce_pollution | 0.613 | 88472 |
| waste_disposal | 0.612 | 44322 |
| environmental_quality | 0.612 | 55712 |
| environmental_pollution | 0.607 | 52695 |
| flood_control | 0.606 | 74083 |
| environmental_technology | 0.606 | 82794 |
| water_quality | 0.605 | 8567 |
| environmental_impact_assessment | 0.602 | 71392 |
| polluter | 0.590 | 52330 |
| environmental_standard | 0.589 | 87541 |
| air_pollution | 0.587 | 13199 |
| emission_reduction | 0.586 | 34127 |
| environmental_law | 0.585 | 32051 |
| energy_conservation | 0.585 | 27969 |