Money was unable to move the price level of goods and services decreased gradually because there is less money in the economy, there is not enough money to people to buy goods and services.
Deflation is the price of goods and services declined steadily. Because there is less money in the economy, the public has not enough money to purchase goods and services.
Deflation is the price level of goods and services to decrease. Because of the money in the economy is making people don't have enough money to buy goods and services.