ご苦労様[gokurousama] thank you very much for your ...
御苦労さん[gokurousan] I appreciate your efforts
苦力[kuurii] coolie
悪戦苦闘[akusenkutou] hard fighting
気苦労[kigurou] worry

夜露死苦[yoroshiku] well
狭苦しい[semakurushii] cramped
勤苦[kinku] toil and hardship
苦い[nigai] bitter
苦しい[kurushii] painful

垂迹[suijaku] temporary manifestation by a buddha (in order to save people)
筆迹[hisseki] handwriting
真迹[shinseki] true autograph

事迹[jiseki] evidence
本地垂迹説[honjisuijakusetsu] manifestation theory (holding that Shinto gods are manifestations of buddhas)
迹門[shakumon] first half of the Lotus Sutra, in which the Buddha appears as a spatiotemporally restricted being