 |
| English thesaurus | |||
| |||
| NHD | |||
| Natural Hazards: 28 phrases in 14 subjects |
| Agriculture | 1 |
| Astronautics | 1 |
| Aviation medicine | 6 |
| Business | 1 |
| Construction | 3 |
| Ecology | 1 |
| Economy | 2 |
| Environment | 3 |
| Geography | 1 |
| Insurance | 1 |
| Navigation | 1 |
| Security systems | 4 |
| Technology | 1 |
| United Nations | 2 |