Before anyone can use a thing, it has to be named. The name is the first handle the mind gets — the earliest, cheapest, most powerful layer of any interface. Get it right and the whole system feels obvious; get it wrong and no amount of onboarding rescues it.
So I treat naming as design, not decoration. A good name is a compression of the model: it tells you what the thing is, what it is not, and how to hold it — all before the first click.
Arabic sibling: التسميةُ أوّلُ الواجهات.