| Subject | Danish | English |
| nat.sc., agric. | blågrå siv | hard rush (Juncus glaucus Ehrh., Juncus inflexus L.) |
| nat.sc., agric. | blågrå siv | sea-green rush (Juncus glaucus Ehrh., Juncus inflexus L.) |
| bot. | blågrå siv | hard rush (Juncus inflexus L.; Juncus glaucus Ehrh.) |
| nat.sc., agric. | butblomstret siv | blunt-flowered rush (Juncus obtusiflorus Ehrh., Juncus subnodulosus Schrank) |
| transp., agric. | båd som er udstyret med en mekanisk krumkniv til at afskære siv | submarine saws |
| bot. | børste-siv | heath rush (Juncus squarrosus L.) |
| bot. | fin siv | dwarf rush (Juncus capitatus Weigel) |
| nat.sc., agric. | fladstrået siv | round-fruited rush (Juncus compressus Jacq.) |
| bot. | fladstrået siv | round-fruited rush (Juncus compressus Jacq.) |
| bot. | glanskapslet siv | jointed rush (Juncus articulatus L.; Juncus lamprocarpus Ehrh. ex Hoffm.) |
| bot. | kastanie-siv | chestnut rush (Juncus castaneus Sm.) |
| bot. | klit-siv | Baltic rush ssp. balticus (ssp. balticus, Juncus arcticus Willd.; Juncus balticus Willd. (ssp. balticus)) |
| bot. | klæg-siv | frog rush (Juncus ranarius Song. & Perr.; Juncus ambiguus auct.; Juncus bufonius L. ssp. ranarius (Song. & Perr.) Hiitonen; Juncus bufonius L. ssp. ranarius (Song. & Perr.) Hayek) |
| bot. | knop-siv | compact rush (Juncus conglomeratus L.; Juncus leersii T. Marsson) |
| bot. | liden siv | bulbous rush (Juncus bulbosus L.; Juncus supinus Moench (ssp. bulbosus); Juncus kochii F. W. Schultz; Juncus welwitschii Hochst. ex Steud. (ssp. kochii)) |
| bot. | lyse-siv | soft-rush (Juncus effusus L.) |
| fin. | SIV-investeringsenhed | structured investment vehicle |
| fin. | SIV-investeringsselskab | structured investment vehicle |
| life.sc. | sive igennem | to trickle through |
| transp. | sive ud | weeping |
| transp. | sive ud | to weep |
| environ. | sivende perkolat | migrating leachate |
| bot. | sod-siv | Alpine rush (Juncus alpinoarticulatus Chaix; Juncus alpestris Hartm. (ssp. alpestris); Juncus alpinus Vill.; Juncus fuscoater Schreb. (ssp. alpinoarticulatus); Juncus alpinus auct.; Juncus nodulosus Wahlenb.; Juncus rariflorus Hartm. (ssp. nodulosus)) |
| bot. | strand-siv | sea rush (Juncus maritimus Lam.) |
| bot. | toblomstret siv | two-flowered rush (Juncus biglumis L.) |
| bot. | treblad-siv | three-leaved rush (Juncus trifidus L.) |
| bot. | treblomstret siv | three-flowered rush (Juncus triglumis L.) |
| bot. | tudse-siv | toad rush (Juncus bufonius L.) |
| bot. | tue-siv | slender rush (Juncus tenuis Willd.; Juncus macer Gray) |
| transp., construct. | vandet siver gennem diget | the water seeps through the dike |
| transp., construct. | vandet siver gennem diget | the water oozes through the dyke |