| Kossoworotka | kosovorotka |
| Kosewort | term of endearment |
| Kosmodrom | cosmodrome |
| Kosmopolit | cosmopolitan cosmopolite |
| Kunstwort | made-up word term |
| Passwort | password |
| Kosmetika | cosmetics |
| Kosmetologe | cosmetologist |
| Kosmetologin | cosmetologist |
| Kosmologin | cosmologist |
| Kosmonautin | spacewoman |
| Koseform | affectionate form familiar form |
| Kosmogonie | cosmogony |
| Kosmografie | cosmography |
| Kosmologe | cosmologist |
| Kosmologie | cosmology |
| Kosmonaut | cosmonaut |
| Kosovare | Kosovan |
| Kosovarin | Kosovan |
| Kosovo | Kosovo |