There are so many coins on the market and they all serve different purposes as they were all created for specific reasons. We have volatile crypto currencies and stable tokens and some of them are based on Ethereum blockchain

Some were created to be used as a payment system in the banking sectors e.g. the Ripple as many banks had signed up for it.

Volatile crypto currencies

 These coins were created to be used only as a payment method on online and private business because they have an advantage of being decentralized and the government cannot interfere with its process and its transparent as all the transactions can be verified on the blockchain which also serves as the public ledger.

Stable coins

Lastly there is another version which was created not long back called the Stable coins. These coins were meant to stabilize the crypto market as they are backed by commodities, fiat currencies, collaterals and crypto currencies and their value does not fluctuate much as it is pegged on certain levels e.g. $1

Advantages

• Volatile crypto currencies - They tend to change value any time and their price is expected to keep on increasing over time e.g. you might buy coins worth a few cents today and then later on these coins might be worth a fortune e.g. bitcoin made people rich.
• These coins are totally decentralized and no government or company has control over them, their price and value is determined by the demand and supply.
• Stable coins – the dependence of stable coins on other assets is a great disadvantage because its life dependence is on some assets which are bound to lose value with time and these assets are highly affected by crash in markets and these markets are on high risk of manipulation.
• These coins lack full decentralization as they are controlled by certain companies which control how they operate so they are partly centralized and their price is not determined by supply and demand unlike other crypto currencies.

If you wish to make money in the crypto markets then invest in volatile currencies not stable tokens but if you just want to maintain the value of your portfolio overtime then invest in stable tokens.