鍵束

1. Origins, structure, and basic meaning

• Structure: In 鍵束 (かぎたば), key 鍵 and bundle 束 combine to denote a bunch of keys.
• Basic usage: 鍵束 is a group of keys held together, often on a ring.

2. Common pitfalls and similar expressions

• A bundle of multiple keys
  • 鍵束から marks the bundle as the source from which one key is selected, while 鍵束が makes the whole bundle the subject.