| A | B |
| Circ-, Circum- | Prefix that means "around" or "round" |
| Circa | Around a certain time |
| Circuit | A path for an electrical current to flow around |
| Circulate | To move around a place or area |
| Circumference | The distance around a circle |
| Circumnavigate | To go completely around |
| Circumspect | Careful to look around before doing something |
| Circumvent | To prevent something from happening |
| Circumstance | A fact or condition surrounding an event |
| Circuitous | Taking the long way around |