| Similarity | Rank | |
|---|---|---|
| pollution | 0.720 | 2289 |
| pollutant | 0.685 | 10281 |
| non-hazardous | 0.681 | 89624 |
| pollute | 0.679 | 9638 |
| anti-pollution | 0.674 | 34159 |
| superfund | 0.665 | 51321 |
| incineration | 0.663 | 18636 |
| overfishing | 0.659 | 60336 |
| epa | 0.654 | 15830 |
| orimulsion | 0.648 | 39034 |
| non-fossil | 0.648 | 61005 |
| low-sulphur | 0.646 | 51947 |
| clean-air | 0.643 | 77729 |
| over-fishing | 0.642 | 60905 |
| peatbog | 0.639 | 99210 |
| nffo | 0.638 | 76805 |
| open-cast | 0.636 | 41720 |
| anti-dumping | 0.635 | 44788 |
| hcfc | 0.634 | 89263 |
| hydroelectricity | 0.634 | 85682 |
| deep-mined | 0.633 | 81231 |
| rechem | 0.632 | 47089 |
| ozone-damaging | 0.632 | 88642 |
| barama | 0.631 | 80189 |
| hmip | 0.630 | 34570 |