The word 守卫 is formed through a conceptual combination where two characters, each carrying a core meaning related to protection, are joined to create a more complete and intensified idea. The first character, 守, primarily conveys the idea of holding, keeping, or defending a position or place from within, suggesting steadfastness. The second character, 卫, complements this by emphasizing protecting, guarding against external threats, often with a sense of active patrol or defense. Together, they merge into a single concept that encompasses both the static act of holding a fortification (守) and the dynamic act of repelling invaders (卫), forming the integrated meaning of "to guard" or "to defend".