Stablecoin is a term given to a cryptocurrency that has a fixed valuation in relation to its underlying asset. They are usually pegged to an asset with a stable value, such as gold or fiat money.
To be classified as a stablecoin, the currency should always remain stable in its value despite the volatility of other cryptocurrencies.
As Kinesis Gold (KAU) and Kinesis Silver (KAG) are fixed to the value of their underlying assets - Gold and Silver - They are classified as stablecoins.