 |
| amphibious: 114 phrases in 20 subjects |
| Agriculture | 1 |
| Air defense | 1 |
| Automobiles | 12 |
| Aviation | 10 |
| Biology | 2 |
| Botany | 1 |
| Business | 3 |
| Desert science | 1 |
| Earth sciences | 1 |
| Economy | 2 |
| Electronics | 9 |
| General | 2 |
| Nautical | 6 |
| Navigation | 3 |
| Oil / petroleum | 5 |
| Road works | 1 |
| Space | 11 |
| Technology | 37 |
| United Kingdom | 1 |
| United States | 5 |