空き缶

1. Origins, structure, and basic meaning

• Structure: 空き缶 is read あきかん and means a can that is empty after its contents have been used.
• Basic usage: It describes an empty can placed in a collection bin and one painted for reuse.

2. Common pitfalls and similar expressions

• Collection
  • 空き缶を回収箱に入れた describes putting an empty can in a collection bin.
• Reusing the can
  • 空き缶に色を塗って describes painting an empty can before making it into another object.