VIX is the volatility index that measures volatility on the S&P 500 index.
Volatility is the rate at which the price of a financial instrument rises or falls. In general, the higher the volatility, the riskier the security.
Volume is the number of contracts for a specific asset that have been bought and sold in a specific period of time.
VWAP stands for volume-weighted average price, which is a technical analysis tool that shows the average price of a trading instrument adjusted for its volume.