| Kollaboration | collaboration |
| kollaborativ | collaborative |
| Kollaborateur | collaborator |
| Kollokation | collocation |
| Elaboration | development |
| Kollaborateurin | collaborator |
| Kolligation | colligation |
| Kollation | collating collation |
| kollaborieren | collaborate |
| Kommemoration | commemoration |
| Komparation | comparison |
| Kohabitation | cohabitation |
| Konfabulation | confabulation |
| Kollektion | collection |
| Kolonisation | colonisation |
| Zollstation | custom duties |
| Malabsorption | malabsorption |
| Adoration | adoration |
| Defloration | defloration |
| Exploration | exploration |