That leaves you with words that are dependent on A. You are going to define 'story' with words that are dependent on the word you are defining. Isn't that even more futile?
I think I can see your basic misunderstanding. You can't see that words can only be defined using other words, which can only be defined using other words; and that these words are all transient, arbitrary symbols which change.
Language isn't mathematics; there are few exact definitions.
If I asked you, "What's your story?", would you refuse to understand me, because that use of 'story' wasn't in your definition? Language doesn't work that way, and I think this is what your correspondents seem to understand, and which you could profitably consider.