This is the 186th most frequent Vietnamese word.
chi
The Vietnamese word "chi" can mean "older sister."
"Chị" is used here to refer to an elder sister.
Chị gái của tôi rất thích hoa hồng.
My elder sister really likes roses.
"Chỉ" is used here to mean "only" or "just".
Anh chỉ cần làm bài tập này thôi.
You just need to do this assignment.
"Chỉ" here functions as the verb "to guide" or "to point out".