Two luminosities 二種光明（舊譯傳統的母與子光明、基與道光明／新譯傳統的義光明、喻光明）

The two luminosities (Tib. འོད་གསལ་གཉིས་, Wyl. 'od gsal gnyis) are:

1. Ground luminosity or mother luminosity
2. Path luminosity or child luminosity