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