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

水芹[seri] Java water dropwort (Oenanthe javanica)
芹科[serika] Apiaceae (parsley family of plants)
浜芹[hamazeri] Cnidium japonicum (species of umbellifer)

毒芹[dokuzeri] Mackenzie's water hemlock (Cicuta virosa)
三葉芹[mitsubazeri] mitsuba (Cryptotaenia japonica)