The word "侍卫" is formed by combining the character "侍", which means to serve or attend and is composed of the person radical "亻" with the component "寺" suggesting service, and the character "卫", which means to guard or protect and originates from the simplified form of "衛" implying defense. Together, they create a compound term referring to a guard or attendant who serves and protects, often in an imperial or formal setting.