Concentration means the focusing of the mind, the narrowing of the mind on only one point. The concentrated mind becomes a very powerful mind -- but remember it is mind, and very powerful, hence more dangerous than ever. Concentration is the method of science.
Awareness is totally different; it is not focusing, it is unfocused alertness. For example, right now you are listening to me. You can hear in a concentrated way, you can be focused on me; then you will miss the birds and their songs, then you will miss this noise on the road. Then you are not aware, then your mind has become very narrow. Awareness is not the narrowing of the mind but the disappearance of the mind. The narrowing of the mind makes the mind more of a mind -- hence the Hindu mind is more of a mind, the Mohammedan mind is more of a mind, the communist mind is more of a mind, because these are all narrowing. Somebody is focused on Das Kapital or the Communist Manifesto, somebody is focused on the Koran or on the Dhammapada, somebody on the Gita, somebody on The Bible -- focused people. They create narrow minds in the world.
They create conflict, they don't bring compassion.