 |
| gear-wheel: 135 phrases in 21 subjects |
| Armored vehicles | 7 |
| Automated equipment | 8 |
| Automobiles | 17 |
| Aviation | 12 |
| Construction | 2 |
| Electronics | 1 |
| Gear train | 12 |
| Machinery and mechanisms | 1 |
| Makarov | 5 |
| Mechanic engineering | 15 |
| Metallurgy | 2 |
| Military | 1 |
| Nautical | 3 |
| Oil and gas | 1 |
| Oilfields | 3 |
| Rail transport | 3 |
| Technology | 18 |
| Textile industry | 2 |
| Thermal engineering | 1 |
| Transport | 19 |
| Weapons and gunsmithing | 2 |