| Subject | English | Spanish |
| bot. | Chinese nettle | ramio blanco Boehmeria nivea |
| bot. | Chinese nettle | ramio Boehmeria nivea |
| nat.sc., agric. | dog nettle | ortiga menor (Urtica urens) |
| nat.sc., agric. | downy common hemp-nettle | cáñamo bastardo (Galeopsis tetrahit) |
| agric. | downy hemp-nettle | cáñamo bastardo (Galeopsis tetrahit) |
| nat.res., agric. | great nettle | ortiga grande (Urtica dioeca, Urtica dioica) |
| bot. | Indian nettle | ramio Boehmeria tenacissima |
| bot. | Indian nettle | ramio verde Boehmeria tenacissima |
| nat.sc., agric. | Indian nettle | ricinela (Acalypha indica) |
| nat.sc., agric. | Indian nettle | ramio (Boehmeria tenacissima, Boehmeria utilis) |
| bot. | Indian nettle | ricinela Acalypha indica |
| industr., construct. | nettle-cloth | batista de Cantón |
| nat.sc., agric. | nettle family | urticaceas (Urticaceae) |
| bot. | nettle family | urticáceas Urticaceae |
| bot. | nettle fibre plants | ortigas de fibra Urticaceae (spp.) |
| med. | nettle rasch | urticaria |
| vet.med. | nettle rash | urticaria Urticaria |
| bot. | nettle tree | lodoño Celtis australis |
| bot. | nettle tree | latonero Celtis australis |
| bot. | nettle tree | almez Celtis australis |
| gen. | sea nettle | escifomedusa Chrysaora quinquecirrha |
| nat.sc., agric. | small nettle | ortiga menor (Urtica urens) |
| nat.res., agric. | stinging nettle | ortiga grande (Urtica dioeca, Urtica dioica) |