 |
| booster: 901 phrase in 56 subjects |
| Agriculture | 7 |
| Air defense | 4 |
| Architecture | 6 |
| Astronautics | 8 |
| Automobiles | 85 |
| Aviation | 53 |
| Business | 4 |
| Chemistry | 6 |
| Compressors | 7 |
| Computer numerical control | 1 |
| Construction | 3 |
| Consulting | 1 |
| Drilling | 5 |
| Economy | 1 |
| Electric machinery | 16 |
| Electricity | 1 |
| Electronics | 37 |
| Engineering geology | 2 |
| Explosives and Explosive Ordnance Disposal | 25 |
| General | 11 |
| Geophysics | 1 |
| Hydroelectric power stations | 9 |
| Industry | 4 |
| Information technology | 1 |
| International Monetary Fund | 8 |
| Mechanic engineering | 2 |
| Mechanics | 2 |
| Medical | 4 |
| Metallurgy | 34 |
| Military | 2 |
| Missiles | 1 |
| Nautical | 3 |
| Navigation | 3 |
| Nuclear physics | 1 |
| Nursing | 1 |
| Oil / petroleum | 33 |
| Oil processing plants | 1 |
| Plastics | 5 |
| Polymers | 1 |
| Rail transport | 5 |
| Refrigeration | 6 |
| Reproductive biology | 2 |
| Securities | 2 |
| Shipbuilding | 12 |
| Shooting sport | 1 |
| Skydiving | 1 |
| Space | 201 |
| Sports | 3 |
| Technology | 251 |
| Telecommunications | 2 |
| Textile industry | 4 |
| Thermal Energy | 1 |
| United Nations | 1 |
| United States | 4 |
| Veterinary medicine | 2 |
| Water resources | 4 |