This is the 4617th most frequent Korean word.
강성
"강성" means "strong, firm, or rigid."
In this sentence, '강성' is used to describe a strong and firm quality of the leadership that the person has shown.
그는 강성한 리더십을 보여주었다.
He demonstrated strong leadership.
Here, '강성' indicates a forceful or emphatic tone or approach taken by the activist group.
환경운동 단체는 강성의 목소리를 냈다.
The environmental activist group raised a strong voice.
In this instance, '강성' is utilized to refer to a rigid or strict characteristic that might be evident in certain economic policies.