Bitcoin is the main cryptocurrency that exists in this world of cryptocurrency. It is mainly in the use of everything. Everything that existed here is because of this guy bitcoin.
While bitcoin cash is the "forked" bitcoin. By means of forked, it is also an altcoin or known as the alternative coins. The forked existed last August 1, 2017.
Its also a major shitcoin thats just trying to cash in on the name of BITCOIN at this point with its shills