暗躍[anyaku] secret manoeuvering
一躍[ichiyaku] (at) one bound
活躍[katsuyaku] activity (esp. energetic)
欣喜雀躍[kinkijakuyaku] jump up for joy
雀躍[jakuyaku] leaping for joy

跳躍[chouyaku] jump
飛躍[hiyaku] leaping
飛躍的[hiyakuteki] rapidly
躍り掛かる[odorikakaru] to spring at or upon
躍り込む[odorikomu] to jump into

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