| Similarity | Rank | |
|---|---|---|
| dieldrin | 0.819 | 57671 |
| insecticide | 0.814 | 17152 |
| ddt | 0.803 | 35026 |
| aldrin | 0.799 | 81928 |
| fungicide | 0.796 | 25448 |
| lindane | 0.796 | 67136 |
| herbicide | 0.779 | 19942 |
| atrazine | 0.768 | 78097 |
| fertiliser | 0.760 | 9071 |
| dioxin | 0.760 | 17452 |
| nitrate | 0.751 | 7756 |
| fertilizer | 0.742 | 11561 |
| weedkiller | 0.740 | 34367 |
| contamination | 0.733 | 7877 |
| agro-chemical | 0.732 | 60833 |
| malathion | 0.731 | 55530 |
| eutrophication | 0.730 | 42648 |
| incineration | 0.730 | 18636 |
| pollutant | 0.729 | 10281 |
| organochlorine | 0.726 | 48475 |
| paraquat | 0.724 | 68444 |
| polychlorinate | 0.723 | 45744 |
| carcinogen | 0.721 | 23531 |
| defoliant | 0.720 | 73950 |
| chlorofluorocarbon | 0.712 | 24061 |