Is flow an ERC 20?

Could you please clarify for me if Flow is classified as an ERC-20 token? I've been reading about various cryptocurrencies and their technical specifications, but I'm still a bit confused about this specific aspect. ERC-20 seems to be a common standard in the Ethereum ecosystem, but I'm not sure if Flow adheres to the same rules and functionalities. Could you explain the relationship between Flow and ERC-20, if any, and why it might or might not be considered an ERC-20 token? Thank you for your assistance in clearing up this confusion for me.