This is the 7923rd most frequent Korean word.
환경공학과
Department of Environmental Engineering.
The word '환경공학과' refers to the university department where the field of environmental engineering is studied.
대학교 환경공학과에서 공부하고 있습니다.
I am studying at the university's department of environmental engineering.
Here, '환경공학과' refers to the academic discipline focusing on environmental protection.
환경공학과는 환경 보호에 집중하는 학문입니다.
Environmental engineering focuses on protecting the environment.
In this sentence, '환경공학과' indicates the subject of study or major chosen by the sibling.