殻 - husk, nut shell

cigarette end; cigarette butt; tobacco ashes

seashell; shell

diastrophism (movement and deformation of the earth's crust)

(Earth's) crust

shell; husk; hull; pod; chaff

ostracism

remnants of a bean plant; beanstalks and pods; bean husk

shelling (e.g. of eggs, nuts, crabs and such)

cottony cushion scale (species of scale insect, Icerya purchasi)

to withdraw into oneself; to shut oneself away; to seclude oneself

Ghost in the Shell (film)

embers; cinders; burnt residue; combustion residue