Why is our charge rate in kW?

And not kW/hr? Anything else that we measure how much we are getting over time or distance we use that in the name. Saying my rate is 200kW doesn't actually tell me how long it will take me to charge be 200kWs assuming I stay at that rate.

I don't get it.

Then in the battery, the units are called kWh... What does the hour have to do with it? I might use a kWh in 2 minutes. Again, I just don't understand what the hour denotes.

None of this matters, it's just been gnawing at me.