一位

1. Origins, structure, and basic meaning

• Structure: 一位 is read as いちい and is a noun for first place or the number-one rank in a contest, vote, or evaluation.
• Basic usage: Use 大会で一位になる for a contest result and 一位に選ばれる for being selected into that rank.

2. Common pitfalls and similar expressions

• で and に
  • で marks the contest or setting where the rank is achieved, while に marks first place as the selection result.
• Contrast with 一番
  • 一番 broadly covers order or the greatest degree in everyday speech; 一位 focuses on an officially assigned rank.