The big difference is that Bitcoin Cash has implemented larger blocks to accelerate the verification and reduce the fees. It’s cheaper to send money with Bitcoin Cash (BCH) compared to regular Bitcoin. However, some developers say that Bitcoin Cash is less decentralized and not as safe. Bitcoin did instead implement SegWit, a compromise to increase the block size. This, on the other hand, has been rejected by the Bitcoin Cash developers. There are two sides to each coin. However, Bitcoin and Bitcoin Cash are not too different as they use the same base protocol.