cotton wadding
絋 centers on soft fibrous padding: cotton wadding used for stuffing or cushioning.
絋 combines the thread radical 糸 with 広, which likely contributes the sound コウ. The character is used for cotton wadding, a fibrous material.
The thread radical 糸 beside 広 suggests spreading out soft fibers: picture cotton threads spread wide to make fluffy wadding.
For コウ, imagine a coat stuffed with cotton wadding: coat -> コウ, and the soft padding keeps you warm.
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