noun
UN Office for the Coordination of Humanitarian Affairs
Official organization name; often abbreviated as OCHA in English contexts.
国連人道問題調整事務所は、災害時の人道支援を調整する機関です。
The UN Office for the Coordination of Humanitarian Affairs is an agency that coordinates humanitarian aid during disasters.
Compound of 国連 (United Nations), 人道 (humanity/humanitarian), 問題 (issues/problems), 調整 (coordination), and 事務所 (office).