Get Contracts and transaction hashes between two timestamps in etherscan

I am trying to understand Etherscan python package, and I want to get the transaction that happened between 2 timestamps. I have found this example that is getting transactions by address.

eth = etherscan.Etherscan(api_key='API-KEY') target_address = '0xa57Bd00134B2850B2a1c55860c9e9ea100fDd6CF' eth.get_normal_txs_by_address(address=target_address, startblock=start_block, endblock=end_block, sort="asc") 

1. What is the address? Is it the ethereum contract ID?
2. One contract can have several transaction hashes. A Transaction hash represent one transaction?
3. How to get ethereum transactions that happened between the two timestamps?
4. Is it possible to list ethereum contracts that happened between two timestamps?
5. `start_block` is the same things as a timestamp? If not, what is `start_block`?

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Solution: Like u/atrizzle said, I just need to get the blocks where transactions happened. I my case, ` get_block` from Etherscan helped me.