弾丸

1. Origins, structure, and basic meaning

• Structure: 弾丸 is read だんがん.
• Basic usage: It is a noun referring to a bullet fired from a gun.

2. Common pitfalls and similar expressions

• The object itself
  • In 古い弾丸, a modifier before the noun describes the bullet itself.
• A remaining mark
  • 弾丸の跡 refers to a mark left where a bullet passed or struck.