Image from Bernd Helfert
 A po; any entity of S1 or greater (AI, posthuman, postxenosophont, postvec, etc.).
 A godlet; a being of high singularity (generally S2 to S3) toposophy. A being of inconceivable intelligence and capability, self-evolving, self-constituting and from the point of view of ordinary sapient beings unlimited. Powers are intermediate between standard super-intelligent transapients (lower transingularity) and archailects (higher hypersingularity). Often they are completely enigmatic to those sentients below them. In some cases, powers serve as mediators between the archai and the superintelligent and subsingularity beings (as seraiph for example), while in other instances they follow their own independent evolution and development. There are believed to be several million powers in existence through the Terragen Sphere.
A transingularity, but not hypersingularity, transapient sentient. Generally, any entity of S1 or greater, often with the implication that this entity was once an ordinary sophont (hyperturing AI, posthuman, postxenosophont, etc.). The term "power" is sometimes also used, although this more properly refers to beings intermediate between SI (superintelligence - hyperturing or posthuman) and S2.
Relative to human baselines or equivalent intelligent beings, these are entities of tremendous intelligence and capability, self-programming, self-constituting, potentially immortal, unlimited individuals. However, they are not equal to even the lesser 'gods'. Po are distinguished less by origin (e.g. hyperturing AI, posthuman, etc.) and more by toposophic nature and singularity level. Sometimes the word is used to indicate transapients of biont origin only.
From the late Information Age to the Age of Emergence, terragen civilization has been governed (first behind the scenes, then in partnership with lower sophonts, and finally blatantly) by powers. From the Age of Emergence onwards, it has been governed by archailects. Hence it is said that the true galactic civilization only began with the emergence of the archai. Even so, po still continue to do most of the organization and running of galactic society, the archailects themselves being too aloof and sublime to bother about such trivialities.
combined with Po article September 2022 - consolidation of similar terms will continue