The Chinese word **安危 (ānwēi)** is a **binomial compound** formed by combining two characters with opposite meanings: **安 (ān)**, meaning "safe" or "secure," and **危 (wēi)**, meaning "danger" or "peril." This structure follows a common pattern in Chinese where two contrasting or complementary terms are paired to create a single, abstract concept that encompasses the spectrum between them. In this case, the compound **安危** does not mean "safe and dangerous" separately but functions as a holistic noun meaning **"safety and danger,"** referring collectively to one's state of security or the overall condition of safety, often used in contexts like "不顾安危" (disregarding one's safety). The formation exemplifies how antithetical pairing can efficiently express a complex, unified idea.