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| havaål (Conger conger, Conger oceanicus, Conger verreauxi, Congridae); havål (Conger conger, Conger vulgaris) | |||
| almindelig havål (Conger conger) | |||
| Dutch thesaurus | |||
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| gruj (Conger conger, Conger oceanicus, Conger verreauxi, Congridae); ugor (Conger conger, Conger oceanicus, Conger verreauxi, Congridae) | |||
| congeraal: 2 phrases in 2 subjects |
| Fish farming pisciculture | 1 |
| Natural resourses and wildlife conservation | 1 |