Simple categories matching circular:

• object,
• plate,
• item,
• wreath,
• food,
• feature,
• dna,
• sandwich,
• activity,
• elevation,
• figure,
• structure,
• flower,
• part,
• article,
• canister,
• product,
• wall,
• solid,
• coin,
• conduit,
• motion,
• configuration,
• surface,
• opening,
• entity,
• shape,
• area,
• instrument,
• space,
• form,
• basin,
• fixture,
• member,
• container,
• reflector,
• chamber,
• membrane,
• material,
• construction,
• cylinder,
• thing,

Members with property circular:

• circular_fountain,
• speech,
• seal,
• plate,
• cylinder,
• planter,
• chamber,
• silo,
• ice-cream_tub,
• square_cylinder,
• sphere,
• disc,
• pin,
• sleeve,
• cup,
• wreath,
• shell,
• arc,
• pupil,
• compact_disc,
• shaft,
• pressure_bottle,
• dowel,
• container,
• cable,
• pipe,
• head,
• sock,
• tank,
• smokestack,
• capital,
• cane,
• finger_ring,
• bottle,
• ring_flash,
• dime,
• bearing,
• metal,
• spool,
• tubing,
• drumhead,
• expansion,
• mirror,
• sink_hole,
• grain_bin,
• mug,
• tire_tread,
• sponge,
• film_case,
• drum_skin,
• small_hole,
• large_dome,
• tabletop,
• telephone_diaphragm,
• doughnut,
• carrot,
• manhole_frame,
• container_jar,
• hole,
• coated_optics,
• black_paint,
• tip,
• mausoleum,
• glasses,
• stream,
• frisbee,
• wall_plaque,
• cd,
• trunk_roll,
• pie_shape,
• teacup_plate,
• potter_wheel,
• jar_lid,
• hat,
• circular_hole,
• button,
• transporting_belt,
• train,
• arachnoid,
• textile_pattern,
• wood_disk,
• piece,
• baptistery,
• container_lid,
• bar_stock,
• dowel_rod,
• spherical_segment,
• mat,
• cookie,
• bowl,
• pizza,
• circle,
• grape,
• face,
• hard_candy,
• split_orange,
• flange,
• tree,
• contour,
• corona,
• bullet,
• coffee-can_top,
• baby_bootie,
• drilled_shaft,
• bowls,
• diaphragm,
• conduit,
• thick_crayon,
• biscuit,
• wave,
• railroad_wheel,
• round_seal,
• bottle_cap,
• light_fixture,
• flexible_hose,
• plate_cup,
• hoops,
• silo_floor,
• dome,
• wire,
• cheesecake,
• common_tubing,
• sunflower,
• orbit,
• round_lid,
• spiral_configuration,
• grain,
• storage_drum,
• spiral,
• penny,
• canister,
• tin,
• compressor_turbine,
• seed,
• solar_system,
• cavity,
• recording_disk,
• shovel_handle,
• tank_cover,
• glassware,
• typhoon,
• beauty_dish,
• pit,
• funnel,
• leg,
• annulus,
• belt,
• column,
• paper-towel_tube,
• petal,
• meniscus,
• jar,
• optical_fiber,
• torus,
• disk,
• circular_plate,
• shallow_dish,
• roller,
• bolt,
• ridge,
• tube,
• tortilla,
• hamburger,
• keg,
• circular_bowl,
• pencil,
• process,
• wooden_bowls,
• consecrated_wafer,
• drum,
• johnson_counter,
• doily,
• orange,
• tire_core,
• straw,
• christmas_wreath,
• pattern,
• cyclic_period,
• tyre,
• crown,
• knothole,
• paint,
• mandala,
• serpent_mound,
• small_arms,
• lymphocyte,
• aperture,
• glass,
• tower_mast,
• barrels,
• outer_diameter,
• ceiling_centre,
• saucer,
• pill,
• inner_diameter,
• tree_disk,
• tire,
• atom,
• centripetal_acceleration,
• piston_head,
• frozen_juice,
• best_cockpit,
• lid,
• stockpile,
• spinner,
• polygon,
• pin_hole,
• circular_landmark,
• mt_dna,
• mound,
• cooling,
• heat-exchanger_tube,
• colored_skin,
• shallow_bowls,
• picture,
• paper,
• rocket_case,
• escapement_wheel,
• external_shock,
• reservoir,
• volcano,
• oatmeal_container,
• hula_hoop,
• plastic_bottle,
• donut,
• small_article,
• oval,
• finger,
• acceleration,
• relaxed_circle,
• wheel,
• leaf,
• turret,
• plastic_lid,
• tree_dibble,