 |
| oak: 395 phrases in 17 subjects |
| Agriculture | 11 |
| Amphibians and reptiles | 2 |
| Biology | 104 |
| Botany | 67 |
| Entomology | 73 |
| Environment | 8 |
| Forestry | 16 |
| General | 3 |
| Ichthyology | 2 |
| Life sciences | 18 |
| Medical | 1 |
| Natural resourses and wildlife conservation | 24 |
| Natural sciences | 49 |
| Obsolete / dated | 7 |
| Pest control | 5 |
| Traditional medicine | 1 |
| Zoology | 4 |