遺恨[ikon] grudge
怨恨[enkon] enmity
悔恨[kaikon] regret
逆恨み[sakaurami] being resented in return
旧恨[kyuukon] old grudge

恨み[urami] resentment
恨みっこ無し[uramikkonashi] with no hard feelings
恨みっこのないように[uramikkononaiyouni] making it even
恨み言[uramigoto] grudge
恨む[uramu] to resent

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