| Similarity | Rank | |
|---|---|---|
| Environment | 0.751 | 2978 |
| Environmental_Management | 0.724 | 46550 |
| Sustainability | 0.696 | 11115 |
| Environmental_Protection | 0.695 | 42428 |
| Ecology | 0.695 | 19589 |
| Environmental_Policy | 0.687 | 79363 |
| Pollution | 0.678 | 67166 |
| Ecological | 0.674 | 91103 |
| Environmental_Science | 0.669 | 32182 |
| environmental | 0.668 | 2347 |
| Environmental_Health | 0.666 | 41154 |
| Natural_Resources | 0.663 | 20910 |
| Water_Quality | 0.660 | 57978 |
| Environmental_Justice | 0.640 | 75952 |
| Air_Quality | 0.638 | 61690 |
| Economic | 0.633 | 22932 |
| Environmental_Studies | 0.630 | 44458 |
| Economic_and | 0.627 | 51866 |
| Biological | 0.626 | 38995 |
| Environmental_Law | 0.625 | 91975 |
| Land_Use | 0.617 | 44075 |
| and_Sustainable_Development | 0.617 | 47267 |
| Water_Resources | 0.615 | 38831 |
| Environmental_Engineering | 0.613 | 99326 |
| Environmental_Education | 0.611 | 58738 |