第一

1. Origins, structure, and basic meaning

• Structure: Written 第一 and read だいいち, it marks either the first item in an order or the matter given highest priority.
• Basic usage: It covers putting safety foremost and identifying the first task among several challenges.

2. Common pitfalls and similar expressions

• Order versus priority
  • Depending on context, it can mean first in sequence or foremost in importance.