This is the 15949th most frequent Korean word.
부자가
"부자가" means "rich person" or "wealthy person."
The word '부자가' is used here to indicate a wealthy person, the subject of the dream.
그 남자는 부자가 되는 꿈을 가지고 있습니다.
That man dreams of becoming rich.
Here, '부자가' is used in a temporal context, referring to the state of being rich attained by the individual.
부자가 된 후에 그는 많은 사람들을 도왔습니다.
After becoming rich, he helped many people.
The word '부자가' refers to a group of wealthy people contributing to the city's characteristics.