When artificial intelligence systems are used, they produce results. Using the current large language models, these results are based on statistics. This also means that there is a certain chance that result is wrong. Such wrong results are called hallucination or mirage. This is like in medicine: A hallucination is seeing, or feeling something that is not there. A mirage is an optical illusion. Other terms for this effect include confabulation and delusion. These terms were chosen because they have similar meanings than those used in medicine and psychology.
The artificial intelligence, will present this false or misleading information as a fact.