| Koexpression | coexpression |
| Kompression | compression |
| Dekompression | decompression |
| Depression | depression clinical depression |
| Impression | impression |
| Kompressor | compressor |
| Repression | repression |
| Konfession | denomination |
| Konzession | concession admission licence |
| expressiv | expressive |
| Kompresse | compress swab |
| kompress | solid |
| Digression | excursion |
| Progression | chord progression |
| Aggression | aggression |
| Regression | regression marine regression |
| Obsession | obsession |
| Kommission | commission committee |
| Konkussion | concussion |
| Konversion | conversion |