Bitcoin Cash is the most popular Bitcoin hard fork proposed by Roger Ver in 2017 as a solution to the problem of slow transactions in the Bitcoin network. The idea was to create a version of Bitcoin that would be better for payments, while original Bitcoin is considered more as a store of value. Bitcoin Cash has a bigger block size than Bitcoin so the transactions of this currency are faster and cheaper. On the other side, it requires more resources to run the full node of Bitcoin Cash which makes it more vulnerable to centralization.
Bitcoin Cash quickly attracted a huge following and became a prominent part of the cryptocurrency market. BCH is available on many exchanges and is supported by numerous crypto services. Since the launch of the project, it has never left the top 10.
Cardano coin (ADA) is a cryptocurrency launched in 2017. The currency is based on the Cardano network. The leader of the dev team is Charles Hoskinson, an experienced developer who worked for Ethereum and BitShares prior to the launch of Cardano. Cardano is the first cryptocurrency to use academically peer-reviewed open-source code, which makes this project quite unique.
The consensus algorithm of Cardano is Proof-of-Stake. Cardano is usually praised for its high level of security and quick transactions. Cardano currency quickly gained value and became one of the top 10 cryptocurrencies by market capitalization.