There is a saying that God made us with two ears and one mouth for a reason. Knowing when to talk and when to listen is a skill. We often talk because the silence and pauses make us nervous and we talk to fill the void.
We all hear and we all listen but there is a big difference between the two in quality and quantity. When we hear, we hear words. When we are not paying attention, we hear sound. If we look attentive, we can often get away with not listening, but listening gives us and the person we are talking to something far greater.