無線

1. Origins, structure, and basic meaning

• Structure: In 無線 (むせん), absence 無 and wire 線 combine to denote wireless communication.
• Basic usage: 無線で marks wireless or radio communication as the medium, while 無線キーボード describes a device connected without a cable.

2. Common pitfalls and similar expressions

• Communication medium and compounds
  • Context distinguishes radio communication from wireless connectivity more broadly.