The word **灭火** is a standard verb-object compound in Chinese, formed by combining the verb **灭** (miè, meaning "to extinguish" or "to put out") with its object **火** (huǒ, meaning "fire"). This structure directly and logically represents the action of "extinguishing fire," where the first character denotes the action and the second character denotes the target of that action. It is a typical example of how Chinese creates concise, meaningful words by pairing semantically related characters.