 |
| perturber: 84 phrases in 19 subjects |
| Astronautics | 16 |
| Astronomy | 1 |
| Aviation | 10 |
| Business | 1 |
| Dentistry | 1 |
| European Union | 1 |
| Figurative | 2 |
| General | 3 |
| Hydraulic engineering | 1 |
| Information technology | 7 |
| Journalism terminology | 1 |
| Mathematics | 2 |
| Metallurgy | 6 |
| Military | 1 |
| Mining | 1 |
| Oil and gas technology | 1 |
| Radio | 10 |
| Technology | 18 |
| United Nations | 1 |