There are certain words that you associate with people. So much so that the word and the person in question become inseparable.
If someone asked me define Charisma I could try everything I wanted but probably the simplest answer that I could give is that if you don't know what Charisma is have a look at Steve Jobs.
There is another word that evokes the same sense. Consider the word Swagger. What would you define it as? Impertinence, indifference towards the opponent, a certain aura or just downright confidence. All these fall by the wayside when you watch Viv Richards sauntering out to the crease from the pavilion with a bat in hand and no helmet of course. When you watch him bat you know what Swagger is.
I suspect there are many more words of this kind and I look forward to finding them.