球形|きゅうけいkyuukei[0]heiban (flat)

1. no-adjectiveglobular shape; spherical shape
   昔むかしの人ひとは、地球ちきゅうは球形きゅうけいで、太陽たいようの周囲しゅういを回まわっていることを知しらなかった。↗

   Formerly people did not know that the earth is round and that it moves around the sun.

• Related球体きゅうたいNeutralA spherical object, not the shape itself: 「球体」is the thing, while 「球形」names only its form.
• Related球きゅうNeutralRead 「まり」: a ball for play or games such as 「手鞠」and 「蹴鞠」. 「球形」refers only to the shape, never the object.
• Antonym平面へいめんNeutralA flat, level surface; stands opposite to 「球形」.

For the shape itself say 「球形」or 「球状」; for a spherical object use 「球体」; for a ball used in games use 「鞠（まり）」. 「平面」is the opposite — a flat surface.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 丸まるい球たまの形かたち。