来日

1. Origins, structure, and basic meaning

• Structure: 来日 is read as らいにち and is a noun and する verb for coming or making a visit to Japan from abroad.
• Basic usage: Coming to Japan in spring appears in 春に来日する, while a friend currently visiting Japan appears in 来日中の友人.

2. Common pitfalls and similar expressions

• Arrival and an ongoing stay
  • Use 来日する for the arrival in Japan and 来日中 for the period during that visit.
• Difference from 訪日
  • Both can refer to a visit to Japan, but 来日 broadly presents the movement as coming to Japan from the Japanese viewpoint.