This is the 6568th most frequent Korean word.
옥수수
Corn.
In this sentence, '옥수수' is used as a subject, referring to the crop of corn that is undergoing a color change.
옥수수가 노란색으로 색깔이 변했어요.
The corn has turned yellow in color.
Here, '옥수수' represents the prepared food item, highlighting its role in a planned meal.
우리는 점심으로 옥수수를 먹기로 했습니다.
We decided to eat corn for lunch.
In this context, '옥수수' is part of the compound noun '옥수수밭' (cornfield), describing the location related to corn.