医博[ihaku] doctor of medicine
該博[gaihaku] profundity
該博な知識[gaihakunachishiki] profound knowledge
商学博士[shougakuhakushi] Doctor of Commercial Science
大英博物館[daieihakubutsukan] British Museum

賭博[tobaku] gambling
博愛[hakuai] charity
博愛家[hakuaika] philanthropist
博愛主義[hakuaishugi] philanthropism
博引傍証[hakuinboushou] citing copious references

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