並列

1. Origins, structure, and basic meaning

• Structure: 並列 (へいれつ) is an action noun for placing two or more items or elements side by side at the same level.
• Basic usage: 機械を並列に配置する arranges two machines side by side, while 語句を並列する coordinates phrases with the same grammatical role.

2. Common pitfalls and similar expressions

• Physical arrangement and grammatical coordination
  • 並列に配置する is a spatial or system arrangement, whereas 語句を並列する is a sentence relation. The second does not mean physically laying words on a desk.