scarce | swift
| swift | |
| ornit. | Apus; Apus Apus |
| zool. | Apus apus |
| swifts | |
| entomol. | Hepialidae |
| English thesaurus | |||
| |||
| scs | |||
|
scarce : 48 phrases in 9 subjects |
| Agriculture | 2 |
| Amphibians and reptiles | 2 |
| Biology | 6 |
| Botany | 2 |
| Entomology | 15 |
| Natural resourses and wildlife conservation | 1 |
| Natural sciences | 17 |
| Ornithology | 2 |
| Zoology | 1 |