玉石混淆[gyokusekikonkou] mixture of wheat and chaff
渾淆[konkou] mixture
虚実混淆[kyojitsukonkou] mishmash of truth and untruth

神仏混淆[shinbutsukonkou] mixture (synthesis) of Buddhism and Shintoism
雅俗混淆[gazokukonkou] mixture of both culture and vulgarism
和漢混淆文[wakankonkoubun] mixed writing of literary Japanese and Chinese