| perimeter(noun, area, turn, limit, scope) |
| periphery(noun, area, turn, limit, scope) |
| boundary(noun, area, influence, limit, scope) |
| border(noun, limit, outline, edge, borderline) |
| circle(noun, area, turn, twist, scope) |
| compass(noun, area, turn, influence, limit) |
| margin(noun, limit, edge, border, borderline) |
| outline(noun, outline, edge, border, borderline) |
| rim(noun, limit, edge, border, borderline) |
| circuit(noun, area, turn, twist, scope) |
| ambit(noun, area, turn, influence, limit) |
| girth(noun, outline, edge, perimeter, waist) |
| verge(noun, limit, edge, border, borderline) |
| bounds(noun, influence, limit, track, outline) |
| loop(noun, twist, circle, ring, arch) |
| orbit(noun, area, turn, influence, scope) |
| edge(noun, outline, border, borderline, margin) |
| fringe(noun, limit, edge, border, borderline) |
| ring(noun, twist, edge, circle, border) |
| areola(noun, roundabout) |