Is USDT TRX the same as TRC20?

Excuse me, could you please clarify something for me? I've been hearing a lot about USDT TRX and TRC20, and I'm a bit confused as to whether they are the same thing or not. As a professional in the field of cryptocurrency and finance, I'm sure you have a deep understanding of these terms. Could you explain the difference between USDT TRX and TRC20, if there is any? I'm particularly interested in understanding their functionalities, use cases, and any potential differences in their operations. Your expertise in this area would be greatly appreciated.