快復[kaifuku] restoration
快い[kokoroyoi] pleasant
快楽[kairaku] pleasure
快楽主義[kairakushugi] hedonism
快濶[kaikatsu] cheerful

快感[kaikan] pleasant feeling
快挙[kaikyo] brilliant achievement
快哉[kaisai] joy
快作[kaisaku] splendid work
快事[kaiji] pleasure

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