| zirkadian | circadian |
| circadian | circadian |
| Arkadien | Arcadia |
| Zirkular | circular letter |
| zirka | approximate |
| Zirkon | zircon |
| Zirkonium | zirconium |
| Zirkulation | circulation |
| Arkadier | Arcadian |
| Zerkarie | cercaria |
| zerkauen | chew masticate scrunch chew up |
| Leokadia | Leocadia |
| Zikade | cicada |
| prädial | praedial |
| Radiant | radian radiant |
| radial | radial radially |
| Indian | turkey |
| Midian | Midian |
| Meridian | meridian |
| Zirkulieren | circulation |
| zirkulieren | circulate |