The word "殴打" is formed by combining the characters 殴 and 打. 殴 includes the radical 殳, denoting actions involving striking or weapons, along with 区 contributing phonetically, to convey beating. 打 incorporates the hand radical 扌 with 丁 for phonetic cues, meaning to strike. Together, they form a compound verb where both characters reinforce the sense of physical assault through hitting.