| Kokosnussdieb | coconut crab |
| Kokosdieb | coconut crab |
| Kokosnuss | coconut |
| Kokosnusspalme | coconut palm |
| Kokoswasser | coconut water |
| Kokosfaser | coir |
| Kohleausstieg | coal phase-out |
| Kokoschnik | kokoshnik |
| Kokosinseln | Cocos Islands |
| Kokospalme | coconut coco palm |
| Zökostomie | caecostomy cecostomy |
| Ökoenergie | green energy green power |
| Ökonomie | economy |
| Ökosystem | ecosystem |
| Kopfnuss | brain-teaser |
| Kopfnuß | brainteaser |
| Kopfnuss geben | headbutt |
| Kloschüssel | toilet bowl |
| Atomausstieg | denuclearization |
| Konkussion | concussion |