What is ERC-20 and TRC20?

Could you please explain what ERC-20 and TRC20 are? I'm curious to understand the differences between these two token standards and how they operate within their respective blockchains. ERC-20, as I've heard, is a standard for tokens on the Ethereum blockchain, but I'm not entirely sure about its specific functions and characteristics. Similarly, I'm unfamiliar with TRC20 and its role in the TRON blockchain ecosystem. Could you elaborate on these topics, highlighting their key features and use cases? It would be greatly appreciated if you could provide a concise yet comprehensive overview.