The Chinese word 咆哮 (páoxiào, meaning "to roar" or "to howl") is a disyllabic compound formed through the combination of two nearly synonymous characters, each containing the mouth radical (口). The first character, 咆 (páo), combines the mouth radical with the phonetic component 包 (bāo), suggesting a sound bursting forth. The second, 哮 (xiào), pairs the mouth radical with 孝 (xiào) as its phonetic element. Together, they create a powerful reduplicative and onomatopoeic effect, where the repetition of similar-sounding, mouth-related characters intensifies the meaning to vividly depict a loud, violent, or angry outcry, often from an animal or force of nature.