| Subject | English | Danish |
| agric. | brown rust | brunrust (Puccinia recondita) |
| agric. | brown rust | hejrebrunrust (Puccinia recondita) |
| agric. | brown rust | bygrust (Puccinia hordei) |
| nat.sc., agric. | brown rust of barley | bygrust (Puccinia hordei, Puccinia simplex) |
| nat.sc., agric. | brown rust of rye | rugbrunrust (Puccinia dispersa, Puccinia recondita) |
| agric. | brown rust of wheat | hvedebrunrust (Puccinia dispersa, Puccinia recondita, Puccinia triticina) |
| met. | the austenite is coloured, and when it is blue, the sigmaphase appears rust brown | ved blålig anløbningsfarve ser sigma-fasen rustbrun ud |