| English thesaurus | |||
| |||
| A controlled airspace within the Southern Domestic Airspace SDA at 18 000 ft ASL and above | |||
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Southern : 543 phrases in 40 subjects |
| Agriculture | 5 |
| American usage, not spelling | 1 |
| Amphibians and reptiles | 29 |
| Astronautics | 2 |
| Astronomy | 3 |
| Biology | 2 |
| Botany | 3 |
| Earth sciences | 2 |
| Economics | 20 |
| Education | 1 |
| Energy industry | 9 |
| Entomology | 24 |
| Environment | 16 |
| Finances | 5 |
| Fish farming pisciculture | 8 |
| Food industry | 5 |
| Forestry | 6 |
| General | 140 |
| Geography | 6 |
| Health care | 1 |
| Ichthyology | 20 |
| Immigration and citizenship | 1 |
| International Monetary Fund | 3 |
| Law | 1 |
| Life sciences | 30 |
| Mammals | 59 |
| Medical | 6 |
| Natural resourses and wildlife conservation | 24 |
| Natural sciences | 14 |
| Obsolete / dated | 1 |
| Optics branch of physics | 1 |
| Ornithology | 54 |
| Physics | 4 |
| Politics | 5 |
| Social science | 2 |
| Statistics | 1 |
| Technology | 3 |
| Trade unions | 1 |
| Transport | 1 |
| Zoology | 24 |