| Katholin | papist |
| Katholik | Catholic |
| Kathole | papist |
| Katholikin | Roman Catholic Catholic |
| Kaolin | kaolin |
| Katholikos | catholicos |
| Kätzlein | kitten |
| Kätzli | kitten |
| Katharina | Katherine Catharine Catherin Cathryn Katharine Katharyn |
| Kathode | cathode |
| Kation | cation |
| Kätzin | she-cat |
| katholisch | catholic Catholic |
| Äthin | ethyne |
| Äthylen | ethylene |
| pathogen | pathogenic |
| Kantholz | squared timber |
| Cholin | choline |
| Acholie | acholia |
| abholen | pick up collect take away |