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sharp edges : 40 phrases in 20 subjects |
| Aerohydrodynamics | 1 |
| Astronautics | 4 |
| Aviation | 4 |
| Construction | 2 |
| Drawing | 2 |
| Equestrian sports | 1 |
| Firefighting and fire-control systems | 2 |
| General | 5 |
| Makarov | 3 |
| Military | 1 |
| Nanotechnology | 1 |
| Non-destructive testing | 2 |
| Nuclear and fusion power | 1 |
| Oil / petroleum | 1 |
| Physics | 1 |
| Polygraphy | 2 |
| Sports | 1 |
| Technology | 4 |
| Telecommunications | 1 |
| Wood processing | 1 |