塩辛[shiokara] salted fish (entrails)
辛子[karashi] mustard
香辛料[koushinryou] spices
辛気[shinki] mentality
辛い[karai] spicy

辛い[tsurai] painful
辛うじて[karoujite] barely
辛く当たる[tsurakuataru] to treat badly
辛苦[shinku] hardship
辛酸[shinsan] hardships