If you are looking for the dictionary definition of an intersection I can
give you that. This is it...
The word intersection is a noun, it has three definitions. #1. The act
or process of intersecting. #2. A place or area where two or more
things ( as in streets) intersect. #3. The set of eliments common two or
more sets; especially: the set of points common to two geometric configurations.
If you still don't know what an intersection is , if you have ever been
to Los Angeles there are about fifty million of them (exaggeration), probably
only about 30.