蝶鮫[chouzame] sturgeon (Acipenser mikadoi)
蝶番い[choutsugai] hinge (e.g. on a door)
蝴蝶[kochou] butterfly
蝶蝶[choucho] butterfly
高山蝶[kouzanchou] alpine butterfly

紋白蝶[monshirochou] small cabbage white butterfly (Pieris rapae)
鳳蝶[agehachou] swallowtail butterfly (esp. the citrus swallowtail butterfly, Papilio xuthus)
赤立羽蝶[akatatehachou] red admiral (butterfly)
蝶貝[chougai] silver-lipped pearl oyster (Pinctada maxima)

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