ChatGPT is a language model, it does not "understand" anything, concepts, words or otherwise. It is even programmed to give you a canned response saying something roughly equal to this when asking it about its comprehension abilities.
ChatGPT has no more capacity for understanding concepts than any other computer program, it's just very finely tuned to emit responses that make it appear as if it does.
ChatGPT has no more capacity for understanding concepts than any other computer program, it's just very finely tuned to emit responses that make it appear as if it does.