| Werkstoff | material |
| Wertstoff | recyclable material |
| Wirkstoff | active substance |
| Werkstoffkunde | materials science |
| Werkstein | ashlar |
| Werkstatt | workshop automobile repair shop garage |
| Werkstück | workpiece |
| Gelbstoff | gelbstoff |
| Hornstoff | keratin |
| Lesestoff | reading material |
| Farbstoff | dye |
| Feststoff | solid |
| Harnstoff | urea |
| Heizstoff | fuel |
| Zellstoff | cellulose pulp |
| werktags | weekdays |
| Werktag | workday working day |
| Werst | verst |
| Wertstoffhof | civic amenity site |
| Werwolf | werewolf |