The Chinese word 胸腔 (xiōngqiāng), meaning "thoracic cavity" or "chest cavity", is a compound noun formed through morphological compounding, where two meaningful characters (morphemes) are combined. The first character, 胸 (xiōng), means "chest" or "thorax", specifying the general body region. The second character, 腔 (qiāng), means "cavity" or "hollow space", denoting the specific anatomical structure within that region. Together, they create a precise, logical term where the modifier (胸) narrows down the category of the core noun (腔), a common pattern in Chinese for forming scientific and anatomical terminology.