I think you've nailed the essence of post-structuralist and post-modern thought. The notion that words don't have fixed meanings and that everything is contextual is spot on. No two contexts are ever the same, so the meaning of a word can shift every time it's used. And trying to nail down the meaning of one word just leads you to other words, creating this endless chain of references. Meaning really is unstable and always changing. It’s about letting go of the need to control and instead going with the flow.