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extinction : 489 phrases in 55 subjects |
| Antennas and waveguides | 1 |
| Armored vehicles | 3 |
| Astronautics | 18 |
| Astronomy | 15 |
| Automated equipment | 9 |
| Aviation | 51 |
| Biology | 6 |
| Business | 2 |
| Chemistry | 21 |
| Computers | 2 |
| Construction | 20 |
| Corporate governance | 3 |
| Electronics | 31 |
| Environment | 4 |
| Epidemiology | 1 |
| Finances | 4 |
| Firefighting and fire-control systems | 11 |
| Fishery fishing industry | 1 |
| Food industry | 3 |
| Forestry | 18 |
| General | 9 |
| Geology | 12 |
| Geophysics | 1 |
| Informal | 2 |
| International Monetary Fund | 2 |
| Law | 26 |
| Medical | 2 |
| Medical appliances | 1 |
| Metallurgy | 10 |
| Meteorology | 4 |
| Microsoft | 1 |
| Military | 13 |
| Mining | 7 |
| Missiles | 1 |
| Name of organization | 1 |
| Natural resourses and wildlife conservation | 4 |
| Nautical | 1 |
| Nuclear physics | 18 |
| Oil / petroleum | 5 |
| Oil and gas technology | 3 |
| Optics branch of physics | 7 |
| Paleontology | 2 |
| Patents | 7 |
| Physics | 9 |
| Power electronics | 7 |
| Radiation | 19 |
| Radio | 17 |
| Shipbuilding | 9 |
| Stock Exchange | 1 |
| Technology | 55 |
| Textile industry | 1 |
| Trucks/Lorries | 3 |
| United Nations | 2 |
| Water supply | 1 |
| Welding | 2 |