The word **呼喊 (hūhǎn)**, meaning "to shout" or "to cry out," is a typical **synonymous compound** formed by combining two characters with closely related meanings. The first character, **呼 (hū)**, originally depicted breath from the mouth and means "to exhale" or "to call." The second, **喊 (hǎn)**, carries the meaning "to shout" or "to yell." By pairing these two verbs, the compound **呼喊** creates a more forceful and vivid expression than either character alone, emphasizing a loud, vigorous vocal outcry. This structure is common in Chinese for intensifying or broadening a core semantic idea.