Is ArcBlock erc20?

I've been hearing a lot about ArcBlock recently, and it seems to be gaining quite a bit of traction in the blockchain space. However, I'm a bit confused about its relationship with ERC20. Could you clarify if ArcBlock is indeed an ERC20 token? Or is it a separate blockchain project with its own unique features and capabilities? If it's not ERC20, what makes ArcBlock stand out and how does it differ from other similar projects? I'd appreciate a concise yet informative description to help me understand the positioning of ArcBlock in the current blockchain landscape.