The successful execution of this plan requires cooperation from all departments.

execution 是动词 execute 的名词形式。execute 由前缀 ex-（表示"向外"）和词根 secut（来自 sequi，表示"跟随"）组成，原意是"跟随到底"，引申为"执行、实施"。 execution 作为名词，指"执行、实施"的过程或行为。