| A | B |
| circle | a round shape that has no beginning or end |
| circlet | a small circle; a ring or round band worn as an ornament on the head |
| circuit | a path for an electrical current to flow around |
| circulate | to move around an area or a place, often returning to a starting point |
| circumference | the distance all the way around a circle |
| circumflex | bending around; curved |
| circumnavigate | to go completely around |
| circumrotate | to turn around like a wheel |
| circumspect | careful to look all around before doing something |
| circumvent | to prevent something from happending by careful thinking |