The Monad, The Bythos, The One = The hierarchy above all hierarchies, the single highest ranking emanating figure in all of the universe. Exists in between the Kenoma and the Pleroma as an unbreachable barrier.
The Sophia = Literally “Wisdom” in Greek, lowest emanating Aeon, creator of the Demiurge.
The Demiurge, Yaldabaoth, Saklas = Son of Sophia, creator of the material world. Considered by many to be an interpretation of Yahweh.
The Pleroma = The fullness. The totality of divine powers in an almost heaven-esque post-gnosis afterlife. The Aeons dwell in the Pleroma, where no physicality or material exists
The Kenoma = The emptiness. The utter antithesis to the Pleroma, a vast void where the Archons, made by the Demiurge, dwell.