| circa | approximately |
| circadian | circadian |
| Orca | killer whale orca |
| -kirch | -church -kirk |
| Kirche | church kirk |
| Scirocco | sirocco |
| Kirchtag | fair |
| Menorca | Minorca |
| Diekirch | Diekirch |
| Kirchhof | churchyard |
| Mallorca | Majorca Mallorca |
| in-circuit | in-circuit |
| Kirchdorf | village |
| Kirchweih | fair |
| Kirchplatz | church square |
| Kirchturm | steeple church tower |
| Ostkirche | Eastern Christianity |
| kirchlich | ecclesiastical church churchy ecclesiastic |
| Arcadius | Arcadius |
| Mercaptan | mercaptan |