"stateHash" vs. "previousBlockHash" in blockchain.

Question

What is the difference between statehash and previousBlockhash in blockchain? Should the previousBlockhash of the current block be equal to the statehash of the previous block?

Answer 1

A statehash is the hash of the data inside that block.
A previousBlockhash is the hash of the header of the previous block.

No, the statehash and the previousBlockhash need not be same.