Is TRX same as USDT?

I'm a bit confused about cryptocurrencies. Could you please clarify for me? Is TRX the same as USDT? I've heard of both of them, but I'm not entirely sure about the differences between them. I understand that they are both tokens in the crypto space, but I'm not sure if they serve the same purpose or have similar functionalities. Could you please explain the difference between TRX and USDT in simple terms? I'm still learning about this field and would appreciate your help.