| Exkommunikation | excommunication |
| Kommunikation | communication |
| Dekommunisation | decommunization |
| Telekommunikation | telecommunication |
| Kommunikantin | communicant |
| unkommunikativ | uncommunicative |
| kommunikativ | communicative |
| exkommunizieren | excommunicate |
| Kommunistin | communist |
| Kommutation | substitution test |
| Komplikation | complication |
| Massenkommunikation | mass communication |
| Exklamation | exclamation |
| Kommunikant | communicant |
| Nahfeldkommunikation | near field communication |
| Akkommodation | accommodation |
| Kombination | combination |
| Kommemoration | commemoration |
| Kommunion | Communion |
| Kompensation | compensation |