The desire for a good is supported by the ability and willingness to pay for it. Supply, on the other hand, refers to the total amount of a commodity that is ready for sale.
When demand increases, supply decreases, and when supply increases, demand decreases, resulting in an inverse relationship between these two elements.

People nowadays are very picky about what they use, carry, and wear. They are very careful about what they buy and what they do not buy. A small change in the price or availability of a commodity has a significant impact on people.
The demand and supply model is useful in simplifying how the market price and quantity traded are determined, as well as how external forces affect the commodity's demand and supply.

Demand and supply are fundamental economic concepts that describe the relationship between the quantity of a good or service and its corresponding price in a market. Demand refers to the quantity of a product that consumers are willing and able to purchase at various price levels. It is influenced by factors such as consumer preferences, income levels, and the price of related goods. As the price decreases, demand generally increases, and vice versa.

On the other hand, supply represents the quantity of a product that producers are willing and able to offer for sale at different price points. Supply is influenced by production costs, technology, and the number of producers in the market. Typically, as the price of a product rises, the quantity supplied also increases.

The equilibrium price and quantity in a market are determined by the intersection of the demand and supply curves, representing a balance between what consumers are willing to buy and what producers are willing to sell at a given price.