Bull market - is an optimistic trade, which appears a massive buy of various types of trading instruments and a rise in prices occur. The rise in prices provokes all the players for the acquisition of the asset to earn that contributes to the emergence of the upward trend. Bull mood refers to the positive mood of investors - their rapidly growing confidence in the dynamics of the asset shortly. Such feelings provoke traders to buy.
A bull is a trader, speculator or investor, counting on an increase in the price of an asset, and trading when the price rises.