“Mobility is activity”. Volatility measures how quickly the market price changes over time. There is high volatility and low volatility. When a tool (currency pair (see), oil, silver, wheat, etc.) shows a rather strong price fluctuation every day, this suggests that this tool has a high volatility. You can quickly earn or lose money if you do not have time to react to an unexpected reversal of the price graph (see). Volatile tools are considered to be high-risk.