| Kosmonautin | spacewoman |
| Kosmonaut | cosmonaut |
| Kosmologin | cosmologist |
| Kosovarin | Kosovan |
| Argonautin | Argonaut |
| Taikonautin | taikonaut |
| Aeronautin | aeronaut |
| Astronautin | female astronaut |
| Kolonistin | colonist |
| Kommunistin | communist |
| Komponistin | composer |
| Kosmochemie | cosmochemistry |
| Kosmetik | cosmetic |
| Kosmogonie | cosmogony |
| Kosmografie | cosmography |
| Kosmologie | cosmology |
| Kosmopolit | cosmopolitan cosmopolite |
| Kostenart | cost element |
| Osmanin | Ottoman |
| Rosmarin | rosemary |