This is the 4507th most frequent Korean word.
csis
The word "csis" does not have a meaning in the Korean language; it may be a typo or refer to something else like an acronym (e.g., "CSIS" as the Center for Strategic and International Studies).
This use of CSIS highlights it as an authority or expert in international problem-solving.
CSIS는 국제 문제를 다루는 데 탁월합니다.
CSIS excels in addressing international issues.
CSIS in this sentence is used as a proper noun referring to a specific organization.
저는 CSIS에서 제공한 자료를 읽었습니다.
I read the materials provided by CSIS.
Here, CSIS is again used as a proper noun representing a workplace.