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| English thesaurus | |||
| |||
| EPD | |||
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Environmental Protection : 109 phrases in 14 subjects |
| Automobiles | 1 |
| Chemistry | 1 |
| Economics | 3 |
| Environment | 52 |
| Finances | 1 |
| General | 1 |
| Health care | 3 |
| Materials science | 1 |
| Meteorology | 1 |
| Name of organization | 5 |
| Natural sciences | 1 |
| Politics | 7 |
| Transport | 2 |
| United Nations | 30 |