コウ、ク、グ

craft, construction

工場(こうじょう): factory; plant; mill; workshop
工業(こうぎょう): (manufacturing) industry
工事(こうじ): construction work; construction; work (related to construction, e.g. painting, concrete-pouring, etc.)
工作(こうさく): work; construction; handicraft; maneuvering; manoeuvering
加工(かこう): manufacturing; processing; treatment; machining
工夫(くふう): (1) scheme; device; scheming; devising; figuring out; coming up with; solving ingeniously (2) dedication to spiritual improvement (esp. through Zen meditation)
人工(じんこう): artificial; man-made; human work; human skill; artificiality
工学(こうがく): engineering
大工(だいく): carpenter
工芸(こうげい): industrial arts; craft
細工(さいく): work; craftsmanship; tactics; trick
着工(ちゃっこう): start of (construction) work
工員(こういん): factory worker