The Chinese word **纯净** (chúnjìng), meaning "pure" or "clean," is a **complementary compound** formed by combining two characters with closely related meanings to create a single, more nuanced concept. The first character, **纯** (chún), primarily conveys "pure, unadulterated, or genuine," often referring to something in its essential, unmixed state. The second character, **净** (jìng), means "clean, spotless, or free from impurities." When paired, their meanings reinforce and complement each other, resulting in a term that encompasses both the idea of inherent, untainted quality (**纯**) and the state of being clear and free from dirt or pollution (**净**). It is thus commonly used to describe both physical cleanliness (like pure water) and abstract purity (like pure thoughts or motives).