This is the 770th most frequent Korean word.
그린
"그린" is "green" in English.
Here, '그린' refers to an act of creating a drawing (past participle form of the verb '그리다').
그는 풍경화 한 장을 그리고 있다.
He is drawing a landscape painting.
Here, '그린' means 'Green' as an adjective describing an environmentally friendly or sustainable concept.
그녀는 환경을 위해 그린 운동에 참여했습니다.
She participated in the environmental Green movement.
In this sentence, '그린' again acts as an adjective, applied to describe the type of economy.