The word "招募" is formed by combining the characters "招" and "募". "招" is composed of the radical "扌" (hand) and "召" (to call), denoting the act of beckoning or attracting. "募" is composed of the radical "力" (force) and "莫" (primarily phonetic here), conveying the exertion involved in gathering. Together, they semantically merge to mean recruiting or enlisting people.