整列

1. Origins, structure, and basic meaning

• Structure: 整列 (reading せいれつ) is a noun and suru-verb for people or objects forming orderly lines or being aligned to a consistent standard.
• Basic usage: It applies to children forming two lines and boxes of equal size standing neatly aligned on a shelf.

2. Common pitfalls and similar expressions

• People and objects
  • For people it can be the act of lining up; for objects it can be the resulting orderly arrangement.
• Result marked by に
  • In 二列に整列する, に marks the resulting configuration of two lines.