open

open describes activation. If I activate a light switch, that can be open. If I open a door, that can be open as well. open often describes something's function being activated, but it can also describe a beginning of an event, like the start of a concert or the start of a year. Perhaps childhood could be open. The throughline here is cause and effect. the act of open is always a cause, but open can also be the event around that activation. This activation usually isn't a type of creation and serves to exist within the function of the activated thing.