There is a correspondence between words and reality. When you explain something you do it with words and then you must define those words. Once you understand

There is a correspondence between words and reality. When you explain something you do it with words and then you must define those words. Once you understand some "model" it does not matter what are the words you gave to the components of the whole and the relations between them. You would create such a model out of colored wires. You could attach a note to each wire giving it a name. But the name does not really matter, the connections between the wires are an accurate presentation of reality. Once you have such a wire-model you can throw out the words.