Differences between Ethereum and ZERϴ
ZERϴ is built using the ZK Stack, which is optimized to be as close to the Ethereum EVM as possible. Almost every smart contract written for EVM will be supported by ZERϴ and will hold all key security invariants.
However, there are still some minor differences between the behavior of ZERϴ and Ethereum that you should be aware of when building apps on top of ZERϴ.
You can learn more about EVM differences here.