This is the 17474th most frequent Korean word.
성격의
"성격의" means "of character" or "characteristic."
The word "성격의" is used here to indicate possession or quality of the attribute "caring personality," which characterizes the subject.
그녀는 자상한 성격의 소유자입니다.
She is a person with a caring personality.
"성격의" denotes the relationship or characteristic associated with the noun "차이" (difference), showing that the differences pertain to personalities.
성격의 차이로 인해 갈등이 생겼다.
Conflict arose due to differences in personality.
In this context, "성격의" is used to specify the qualities or elements of the personality that contribute to the subject being described.