曽祖父[hiijiji] great-grandfather
曽祖母[hiibaba] great-grandmother
未曽有[misou] unprecedented
曽孫[souson] great-grandchild

曽祖父母[sousofubo] great-grandparents
木曽馬[kisouma] var. of horse raised in Nagano and Gifu
木曽路[kisoji] section of the Nakasendo

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