state in Henan province
鄘 refers to an ancient Chinese state located in what is now Henan province. Its meaning is purely historical and geographical, with no extended abstract senses.
鄘 combines 庸 (likely phonetic) with the city enclosure ⻏ (阝), indicating a place name. The exact historical development is uncertain.
The left side 庸 looks like a sturdy structure, and the right side ⻏ is a city wall. Together they form the name of an ancient walled state in Henan.
For ヨウ, imagine a yodel echoing over the ancient city walls of 鄘: yodel -> ヨウ, and the sound carries across the old state.
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