Is PaXG the same as Xau?

Excuse me, as a financial and cryptocurrency practitioner, I've encountered numerous tokens and assets in my work. However, I'm somewhat perplexed by the similarity in names between PaXG and Xau. Could you please clarify if PaXG is indeed the same as Xau? Or are they two distinct assets with differing characteristics and use cases? Understanding the nuances between these two terms is crucial for my investment decisions and portfolio management. Thank you for your assistance in clarifying this matter.