craft · construction

1. Origins, structure, and basic meaning

• Structure: 工 relates to making things and construction; its on-reading is こう.
• Basic usage: 工場(こうじょう) means a factory, while 工事(こうじ) means construction or building work.

2. Common pitfalls and similar expressions

• A production site and construction work
  • 工場 is a place that makes goods, such as automobile parts.
  • 修理工事 means repair work. 工事 applies to repairing an existing roof as well as to new construction.