送信

1. Origins, structure, and basic meaning

• Structure: 送信 is read as そうしん and is a noun and する verb for sending an electronic signal, message, or file through a communication system.
• Basic usage: Use メールを送信する for the action and 写真の送信に時間がかかる for the transmission process.

2. Common pitfalls and similar expressions

• Difference from 送付
  • 送付 can send documents or physical items, while 送信 focuses on electronic data and signals.
• Action and ongoing process
  • It can be a single send command or a process whose duration depends on the communication conditions.