工事

こうじ

construction work

JLPT N2

Character Breakdown

Meaning and Usage

"工事" (こうじ) refers to construction work or engineering projects, typically involving building, roadwork, or infrastructure development. It is a common noun used in everyday contexts when discussing public works, renovations, or any kind of physical construction.

Common Contexts

You will often hear "工事" in announcements about road closures, building projects, or maintenance work. It usually implies a temporary activity that affects public spaces or facilities.

Collocations and Patterns

  • 工事をする: to do construction work
  • 工事中: under construction
  • 工事現場: construction site
  • 工事のため: due to construction

These phrases are frequently used in signs, public announcements, and conversations about urban development or repairs.

Register and Politeness

"工事" is a neutral term and can be used in both formal and informal contexts. When combined with polite verbs or expressions, it fits well in announcements or official communications.

Common Mistakes

Learners sometimes confuse "工事" with "工場" (こうじょう, factory). Remember that "工事" relates to construction work, while "工場" refers to a manufacturing plant or factory.

Example Sentences

えきまえでどうろのこうじがおこなわれています。

Construction work is being carried out on the road in front of the station.

こうじのため、つうこうどめになっています。

Due to construction work, the road is closed to traffic.

あたらしいビルのこうじがらいげつからはじまります。

Construction of the new building will start from next month.