This is the 18th most frequent Arabic word.
المتحدة
"United."
Here, "المتحدة" is used in the proper noun "الأمم المتحدة" (The United Nations), referring to the unification of nations toward common goals.
الأمم المتحدة تسعى لتحقيق السلام العالمي.
The United Nations strives to achieve global peace.
In this context, "المتحدة" is used as an attributive adjective, meaning "united" or "unified," describing the word "الأهداف" (goals).
الأهداف المتحدة تسهل تحقيق النجاح المشترك.
Unified goals facilitate the achievement of common success.
In this sentence, "المتحدة" is used as part of the proper noun "الولايات المتحدة" (The United States), indicating a union or federation of states.