drum

1. Origins, structure, and basic meaning

• Structure: 鼓 denotes a drum; its on-reading is こ, and its kun-reading is つづみ.
• Basic usage: Standalone 鼓 refers to a Japanese hand drum, while 鼓動 refers to a heartbeat or throbbing.

2. Common pitfalls and similar expressions

• 鼓 / 鼓動
  • 鼓: Read as つづみ, this word refers to a Japanese hand drum heard on a Noh stage. Example: 能舞台で鼓の乾いた音が響いた。
  • 鼓動: Read as こどう, this word refers to a heartbeat that may continue after running or quicken with tension. Example: 走った後も激しい鼓動がしばらく続いた。