Illusion of understanding. What are the reasons for people's misunderstanding?

This is a simple example. And try to describe the words "freedom", "love", "happiness". These concepts are much broader and deeper, and there will be much more differences. We bring our own meaning to each word and hope that another person, coming from his reality, will understand it the way we understand it. But this is not possible. The reasons for misunderstanding each other lie in the fact that everyone has their own individual way of processing information. And if for your child a good walk is a game of “war” with friends, an automatic machine, a fence, bushes, shooting, loud screams, wallowing on the ground. Then, in your understanding, a good walk can be completely different, and not at all anxiety, broken knees, soiled clothes and extra laundry. Although for someone the happy eyes of their child are more important than such trifles.