Faster version of the Bitcoin with larger block size
1) BCH is a fork of Bitcoin that happened on August 1st, 2017. It is a fork of the Bitcoin blockchain ledger with low fees and fast confirmations.
2) The transaction history prior to August 1st is common between both Bitcoin and Bitcoin Cash. Bitcoin Cash team has increased the block size limit from 1MB to 8MB. It is usually represented by the symbol BCH.