Moving averages are indicators that smooth price data by creating an average price over a period of time. Simple moving averages (SMAs) are straightforward averages of closing prices, while exponential moving averages (EMAs) apply more weight to recent prices. SMAs represent a true average but lag price changes, while EMAs turn sooner but are less smooth. Moving averages of different periods provide short, medium, and long-term perspectives on trends and support/resistance. Volume indicators like on-balance volume (OBV) and accumulation/distribution lines use volume to confirm price trends and identify divergences.