Bitcoin Vs Bitcoin Cash both come from the same blockchain that was a hard fork from Bitcoin. The only differences are that when Bitcoin cash forked they expanded the blocks size from 1mb to 8bm allowing more transactions per block to be processed, but Bitcoin cash is now centralized one point of failure plus the elites now control. Bitcoin is decentralized and no one company to shut down Bitcoin. Bitcoin will be bringing the lighting network up this year and they will also bring online Bitcoin liquid. These will allow a side chain to be created as an offline transaction allowing cheaper transaction fee’s and will make Bitcoin cash useless.
Info on Bitmain
Bitmain is a company in China that makes 90% of the mining hardware for Bitcoin also Bitmain has been acting as the central bank for bitcoin cash.