There are two darknesses.
And there is darkness. And there is light.
"Dark and Light" depend on each other
There is night and darkness.

There is darkness from which night and light emerge.
That darkness has no opposite, is not dependent on another. It is not nothing. It is unthinkable.
It is also called consciousness. Or pure awareness. The way or the light, God. The source of all thingnesses, of all becomings, of all beings.
That is why there is dark and dark, night and light.
1+1=2 and 1+1=1