Ключевые слова: arc boundary, arc contour, arc silhouette, arc structure, ball boundary, ball profile, ball structure, bubble disk, bubble form, bubble outline, circular design, curve circle, curve form, curved circle, cycle contour, disc circumference, disc structure, disk circumference, ellipse boundary, ellipse form, globe circumference, globe profile, globe silhouette, halo circumference, halo form, hoop boundary, hoop silhouette, loop boundary, loop circumference, loop profile, loop shape, orb frame, orb silhouette, orbit frame, orbit silhouette, oval contour, oval frame, oval silhouette, ring pattern, ring profile, ring silhouette, round form, round frame, sphere circumference, sphere outline, sphere profile, wheel circumference, wheel outline, wheel symmetry,