Event

Founding event --- e.g. of Roman Republic
Concluding event
Order event --- event significant to an order: E.g. the Westphalian Peace setting the Westphalian Order or the Fall of the Soviet UnionG.E.
Genesis; Birth
Eventuality
Generative dialectic -- E.g. sexual relations are a generative dialectic that generates new generations of humans.
Event horizon
World order; New order