Stablecoins peg their values to various fiat currencies or assets, such as gold. Most often pegged one-to-one with the U.S. dollar, stablecoins give users a way to sell into an asset carrying the same value as a national currency, but one that can still be transacted and stored in a crypto-esque fashion within the ecosystem.
The number of people who utilize crypto coins (i.e., utility) and for what purpose impacts their price. The price will rise if more people use them to buy goods and services rather than just holding them.

Satoshi Nakamoto. A pseudonym for an individual or group that introduced Bitcoin in late 2008 in a white paper published via a mailing list for cryptography. To facilitate transactions, bitcoins can be divided into miniscule units. For example, there are units as tiny as a millionth of bitcoin, or even a hundred-millionth of a bitcoin, which is called a satoshi.
According to Stephen Innes, the head of Asian trading for the foreign exchange Oanda, hacks were the first element to have a chilling effect on crypto. Hearing the amount of money that thieves were able to take, he says, “Consumers got very concerned that their money could go missing.”