Supply and demand
In economics, supply and demand correspond to the two main actions of trade. They represent the buying and selling pressure of goods, services or assets. In macro and micro economics, the two concepts take on the meaning of quantity of consumption requested by the market (demand) and quantity of goods available (supply). The two values are then quantified and related in order to understand and analyse trends in an industry.
In the crypto sector, they are the two leverages that determine the price of a cryptocurrency.