What is the difference between demand …

The following points are noteworthy so far as the difference between demand and quantity demanded is concerned:

• Demand is defined as the willingness of buyer and his affordability to pay the price for the economic good or service. Quantity Demanded represents an exact quantity (how much) of a good or service is demanded by consumers at a particular price.
• Demand refers to the graphing of all the quantities that can be purchased at different prices. On the contrary, quantity demanded, is the actual amount of goods desired at a certain price.
• When a person talks about increase or decrease in demand, it means the change in demand. Conversely, if a person talks about expansion or contraction of demand, he refers to the change in quantity demanded.
• Changes in demand are due to the factors other than price, i.e. income, the price of complementary goods, the price of substitutes, etc. On the other hand, changes in quantity demanded is due to price.
• Change in demand will result in the shift in the demand curve. As opposed to quantity demanded, where the change may lead to the movement along the demand curve.