完工 (wángōng) is used more generally for finishing any work, while 竣工 (jùngōng) specifically refers to the completion of construction projects.

Imagine a giant construction site with a sign that reads '竣工' when it's finished. The character 竣 has a component that looks like a roof (厂), symbolizing construction, while 工 means 'work.' Together, they depict the work being completed under the roof.

竣工 is often used in formal contexts, so avoid using it in casual conversations. Common collocations include '竣工仪式' (completion ceremony) and '竣工报告' (completion report). Be careful with the tones; mispronouncing them can lead to misunderstandings.

While 竣工 is not an HSK word, it relates to HSK vocabulary in the context of construction and completion, which includes words like 完成 (complete) and 建筑 (building). Focus on using it in formal sentences to enhance your vocabulary in professional settings.

竣工 is often celebrated in Chinese culture with a completion ceremony, reflecting the importance of finishing projects on time and the communal effort involved in construction. These ceremonies can include rituals to bless the building.

Learners often confuse 竣工 with 完成 (complete), using them interchangeably. For example, saying '竣工这个项目' is incorrect; it should be '完成这个项目' to mean 'complete this project.'