| Subject | English | Spanish |
| nat.sc., agric. | apple and thorn fruit weevil | gorgojo rojo del manzano (Coenorrhinus aequatus, Rhynchites aequatus) |
| entomol. | apple and thorn skeletonizer | polilla de las hojas del manzano Eutromula pariana |
| nat.sc., agric. | apple-and-thorn skeletonizer | polilla de las hojas del manzano (Antophila pariana, Simaethis pariana) |
| agric. | Christ's thorn | carnauba (Copernicia cerifera, Copernicia prunifera) |
| agric. | Christ's thorn | carandai (Copernicia cerifera, Copernicia prunifera) |
| nat.res. | common thorn-apple | flor de la trompeta (Datura stramonium L.) |
| nat.res. | common thorn-apple | estramonio (Datura stramonium L.) |
| nat.res. | common thorn-apple | berenjena del diablo (Datura stramonium L.) |
| nat.res. | common thorn-apple | belladona del pobre (Datura stramonium L.) |
| bot. | Egyptian thorn | babul Acacia arabica, A. vera |
| bot. | Egyptian thorn | acacia arábiga Acacia arabica, A. vera |
| bot. | Egyptian thorn | acacia de Egipto Acacia arabica, A. vera |
| bot. | evergreen thorn | espino albar piricanta Crataegus pyracantha |
| med. | Frey thorn | cuerno de Frey |
| bot. | Jerusalem thorn | retama Barkinsonia aculeata |
| bot. | Jerusalem thorn | espinillo de España Barkinsonia aculeata |
| nat.sc., agric. | kangaroo thorn | espino de canguro (Acacia armata) |
| bot. | kangaroo thorn | espino de canguro Acacia armata |
| bot. | root thorns | espinas radicales |
| life.sc., environ., agric. | sallow thorn | espino falso (Hippophae rhamnoides) |
| life.sc., environ., agric. | sallow thorn | espino amarillo (Hippophae rhamnoides) |
| bot. | sloe thorn | bruñera Prunus spinosa |
| bot. | sloe thorn | endrinera Prunus spinosa |
| bot. | sloe thorn | enterina Prunus spinosa |
| bot. | sloe thorn | espino negro Prunus spinosa |
| bot. | sloe thorn | endrino Prunus spinosa |
| agric. | thorn-apple | berenjena del diablo (Datura stramonium) |
| nat.res. | thorn apple | datura stramonium |
| agric. | thorn-apple | manzana espinosa (Datura stramonium) |
| agric. | thorn-apple | estramonio (Datura stramonium) |
| agric. | thorn-apple | datura (Datura stramonium) |
| nat.res. | thorn apple | estramonio |
| nat.res. | thorn apple | datura |
| agric. | thorn-apple | higuera loca (Datura stramonium) |
| forestr. | thorn forest | bosque espinoso |
| med. | thorn-like process | apófisis espinosa (spina) |
| med. | thorn-like process | espina |
| life.sc., fish.farm. | thorn sturgeon | esturión barba de flecos (Acipenser nudiventris) |
| life.sc., fish.farm. | thorn sturgeon | esturión de vientre desnudo (Acipenser nudiventris) |
| forestr. | thorn tree | árbol espinoso |
| nat.res. | white thorn | espino blanco (Crataegus monogyna, Crataegus oxyacantha, Crataegus(L.)Spec.) |
| nat.sc., agric. | white thorn | espino albar (Crataegus monogyna, Crataegus oxyacantha, Crataegus(L.)Spec.) |
| nat.sc., agric. | white thorn | espino (Crataegus monogyna, Crataegus oxyacantha, Crataegus(L.)Spec.) |