玉

1. Origins, structure, and basic meaning

• Structure: 玉 is read たま here and is a noun for a round object such as a bead or ball.
• Basic usage: Context distinguishes a small ガラスの玉 from a throwable 赤い玉, using material, color, and action as cues.

2. Common pitfalls and similar expressions

• Bead and ball
  • 玉 can be translated as “bead” or “ball” according to size and use. Do not fix every occurrence to only one English word.
• の linking material
  • In ガラスの玉, の links glass as the material to the round object. It does not describe a ball located inside glass.
• 玉 and 球
  • 球(きゅう) often represents spherical form or a sports ball in Sino-Japanese compounds. 玉 is an everyday word with a broader context-dependent range of round objects.