The ERC-721 standard differs from the ERC-20 standard in Ethereum in the following ways:
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Unique Tokens: ERC-721 tokens are unique and non-fungible, meaning each token has a distinct value and properties, while ERC-20 tokens are fungible, meaning each token is identical and interchangeable with another token of the same type.
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Individual Ownership: ERC-721 tokens are individually owned by different addresses, allowing for ownership of unique digital assets, like collectibles, real estate, and in-game items. ERC-20 tokens are not unique and do not represent individual ownership of specific assets.
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Token Behavior: ERC-721 tokens have specific methods for transferring ownership of individual tokens, approving transfers, and checking ownership, which are not present in the ERC-20 standard.
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Use Cases: ERC-20 tokens are typically used for creating cryptocurrencies and utility tokens for various projects, while ERC-721 tokens are used for creating non-fungible tokens (NFTs) that represent ownership of unique assets on the blockchain.
Overall, the main difference lies in the fungibility and uniqueness of tokens, as well as the ownership model and use cases for each standard.
