This is the 9905th most frequent Korean word.
공공주택에
"공공주택에" means "in public housing."
Here, '공공주택에' specifies the location where the people live, establishing a contextual phrase for the subject.
공공주택에 사는 사람들은 정부의 지원을 받습니다.
People living in public housing receive government support.
In this sentence, '공공주택에 대해' means 'about public housing,' indicating the topic or focus of the planning actions.
도시는 더 많은 공공주택에 대해 계획을 세우고 있습니다.
The city is making plans for more public housing.
'공공주택에 대한' describes the subject 'opinions,' linking them as being related to the topic of 'public housing.'