socks, stockings
韤 centers on foot coverings: socks and stockings. The two meanings are close synonyms, both referring to garments worn on the feet.
韤 combines 韋 (leather) with 蔑, which likely contributes the sound. The character is a rare traditional form for socks or stockings, with 韋 suggesting the material.
The left side 韋 suggests leather, and the right side 蔑 looks like a complex wrapping. Imagine leather foot-wrappings: socks or stockings.
For ベツ, picture a pair of socks so worn they are in tatters: 'betsu' sounds like 'bets' as in 'bets are off' when they're falling apart. Bets -> ベツ.