This is the 11343rd most frequent Korean word.
김우주
"김우주" is a Korean name, typically consisting of the family name "Kim" and the given name "Woo-joo," which can mean "universe" or "cosmos."
In this sentence, '김우주' is used as a proper noun functioning as the subject of the sentence, referring to an individual's name.
김우주는 하늘을 나는 꿈을 꿨어요.
Kim Woo-joo dreamed of flying in the sky.
Here, '김우주' is used again as a proper noun to indicate a person someone traveled with.
김우주와 함께한 여행은 정말 잊지 못할 추억이 되었어요.
The trip with Kim Woo-joo became an unforgettable memory.
In this case, '김우주' is used metaphorically to describe someone associated with exploration or reaching for the stars, though still a proper noun.