What is ERC-20 vs ERC 721?

Could you please elaborate on the difference between ERC-20 and ERC-721? I'm particularly interested in understanding their unique characteristics and functionalities within the cryptocurrency ecosystem. ERC-20 seems to be a widely recognized standard, so I'm curious about its interchangeability and compatibility with Ethereum wallets. On the other hand, ERC-721 appears to focus on non-fungible tokens. Could you explain how the uniqueness and individuality of ERC-721 tokens contribute to their value and usage in various applications like digital art and gaming? Additionally, I'd like to know how these standards facilitate the creation and management of tokens on the Ethereum blockchain. Thank you for clarifying these distinctions for me.