| Subject | English | Finnish |
| nat.sc., agric. | apple and thorn fruit weevil | omenaleikkuri (Coenorrhinus aequatus, Rhynchites aequatus) |
| nat.sc., agric. | apple-and-thorn skeletonizer | reunakääriäinen (Antophila pariana, Simaethis pariana) |
| agric. | Christ's thorn | karnaubapalmu (Copernicia cerifera, Copernicia prunifera) |
| nat.res. | common thorn-apple | hulluruoho (Datura stramonium L.) |
| life.sc., environ., agric. | sallow thorn | tyrni (Hippophae rhamnoides) |
| agric. | sallow-thorn berry | tyrnimarja (Hippophae rhamnoides) |
| nat.res. | thorn-apple | hulluruoho (Datura Stramonium Lin., Datura stramonium L, Datura stramonium) |
| bot. | thorn-apple | hulluruoho (Datura stramonium L.; Datura stramonium f. tatula (L.) A. Blytt; Datura tatula L. (var. tatula)) |
| life.sc., fish.farm. | thorn sturgeon | harmaasampi (Acipenser nudiventris) |
| life.sc., fish.farm. | thorn sturgeon | sampi (Acipenser nudiventris) |
| nat.res. | white thorn | orapihlaja (Crataegus monogyna, Crataegus oxyacantha, Crataegus(L.)Spec.) |