 |
| central area: 42 phrases in 20 subjects |
| Economy | 1 |
| Electronics | 3 |
| Energy industry | 3 |
| Environment | 1 |
| General | 5 |
| Geology | 1 |
| Information technology | 2 |
| International Monetary Fund | 1 |
| Mass media | 1 |
| Medical | 1 |
| Military | 5 |
| Oil and gas technology | 1 |
| Oilfields | 1 |
| Paleontology | 1 |
| Pulp and paper industry | 1 |
| Sociology | 4 |
| Technology | 7 |
| Television | 1 |
| United Nations | 1 |
| Weapons of mass destruction | 1 |