「工学」 (Kougaku) refers to the field of engineering, which applies scientific and mathematical principles to design, build, and maintain structures, machines, and systems. It's often studied at universities. For example: 彼は大学で工学を学びました。(He studied engineering at university.)

科学的な知識を使って物を作る学問です。大学で学びます。例：工学部に進む。