The Chinese word **焰火** (yànhuǒ), meaning "fireworks," is a compound formed by combining two characters with closely related meanings to create a vivid and specific concept. The first character, **焰** (yàn), means "flame" or "blaze," emphasizing the luminous, rising part of a fire. The second character, **火** (huǒ), is the fundamental word for "fire." Together, they form a coordinative or synonymous compound where both elements reinforce and specify each other, essentially picturing "flaming fire" to poetically describe the dazzling, fiery blossoms in the sky that characterize fireworks. This formation is a classic example of how Chinese compounds often synthesize related concrete images to express a more complex idea.