郊こう外がい居きょ住じゅう者しゃ

• 郊こう外がい

  郊外 means 'suburbs' (the area), while 郊外居住者 specifically refers to a person who lives there.

• 住じゅう民みん

  住民 is a general term for 'resident' or 'inhabitant', not limited to suburbs.

Compound of 郊外 (suburbs) + 居住者 (resident).