beard, mustache
鬚 centers on facial hair: a beard or mustache. The two meanings are closely related as types of hair growing on the face.
Ophiopogon planiscapus (flowering plant in the Asparagaceae family)
Volvox (genus of green algae)
pogonophoran (any worm of phylum Pogonophora)
pedipalp
to do something foolhardy; to braid a tiger's whiskers
dwarf mondo grass (Ophiopogon japonicus)
barbel; barb; palp; palpus
bearded seal (Erignathus barbatus)
beard worm (any worm of phylum Pogonophora)
mustache and beard
baleen whale; whalebone whale; mysticete
whalebone; baleen
鬚 combines 髟 (hair) with 須 (beard, mustache), reinforcing the idea of facial hair. 須 itself originally depicted a face with hair, so the compound emphasizes hair on the face.
The top 髟 means hair, and the bottom 須 looks like a face with hair strokes. Together they show a bearded face: 鬚 is a beard or mustache.
For シュ, imagine a shoe brush shaped like a beard: you use it to brush your beard, and shoe -> シュ.