Chauvinism is a form of extreme patriotism and a belief in national superiority and glory. Whereas patriotism and nationalism may represent temperate pride, chauvinism is intemperate. It can be also defined as an irrational belief in the superiority or dominance of one's own group or people.
When you brake to stop your car, you are decelerating. When a ball rolls on the ground and slows down to a stop, the ball is decelerating. Deceleration is the term used for acceleration that causes an object to slow down, while acceleration is motion where the speed of an object changes every second. However, in everyday usage, acceleration is usually taken to mean speeding up. Now that you know what deceleration is, let's look at an example.
This makes sense to me, because as I said earlier deceleration is the key to sports injuries. The vast majority of injuries occur from not being able to stop the forces being generated. One of the most remarkable things about Federer, Djokovic & Murray is the huge amount of time they have spent on court.