一冊[issatsu] one copy (e.g. book)
冊子[sasshi] book
冊子[soushi] written work (esp. a bound text, as opposed to a scroll)
冊数[sassuu] number of books
冊立[sakuritsu] imperial investiture

数冊[suusatsu] several volumes (books)
短冊[tanzaku] long, narrow card on which Japanese poems are written (vertically)
分冊[bunsatsu] separate volume
別冊[bessatsu] separate volume

雨子[amago] land-locked variety of red-spotted masu trout (Oncorhynchus masou ishikawae)
御菓子[okashi] confections
お子さん[okosan] (someone else's) child
お子様[okosama] child (someone else's)
山梔子[kuchinashi] Cape jasmine (Gardenia jasminoides)

させ子[saseko] whore
梃子摺る[tekozuru] to have much trouble
螺子回し[nejimawashi] screwdriver
硝子[garasu] glass
獅子女[sufinkusu] sphinx