Bull market
A sustained period of rising prices.
A bull market reflects optimism and typically means prices are up 20% or more from a recent low. The opposite is a bear market.
A bull market is a long stretch of rising prices and improving sentiment. The common marker is a gain of 20% or more from a recent low, though the mood matters as much as the exact number: buyers are confident, dips get bought, and new highs come regularly.
Bull markets can run for years and tend to climb what traders call a wall of worry, grinding higher even while plenty of people expect a top. Being bullish just means you expect prices to rise. The trap is assuming a long bull run will continue forever; the sharpest reversals come when optimism is most crowded.