| Katharevousa | Katharevousa |
| Katharevusa | Katharevousa |
| Kathareuusa | Katharevousa |
| Katharerin | Cathar |
| Katharer | Cathar |
| Katharina | Katherine Catharine Catherin Cathryn Katharine Katharyn |
| Katharsis | catharsis |
| Kantharos | kantharos |
| Katarerin | Qatari |
| Katholikos | catholicos |
| kathartisch | cathartic |
| Kataphora | cataphora |
| Katarer | Qatari |
| Athanasius | Athanasius |
| Athetose | athetosis |
| Rathaus | town hall cityhall guildhall |
| Kithara | cithara kithara |
| Aphäresis | apheresis |
| Aphärese | apheresis |
| Kabarettist | cabaret artist |