This is the 16020th most frequent Korean word.
북대서양조약기구
North Atlantic Treaty Organization (NATO).
Here, '북대서양조약기구' is used as the subject to describe what NATO represents.
북대서양조약기구는 국제적인 방위 동맹입니다.
NATO is an international defense alliance.
In this sentence, '북대서양조약기구' is used within the context of membership to the organization.
많은 국가들이 북대서양조약기구의 회원국으로 가입했습니다.
Many countries have joined NATO as member states.
The usage of '북대서양조약기구' here signifies the subject of study, showing its role in academic or analysis purposes.