What does DEMAND means in Economics

In Economics, Demand means desire to have a commodity backed by enough money to pay for the good demanded.
It should also be mentioned here that demand is not complete unless the consumer has willingness and has money to buy a good or service. A person has the desire, but no money is not a demand but just mere a desire or want.
Therefore, we may define demand for a good as the amount of it, which will be purchased per unit of time at a given price. According to F. Benham,
“The demand for anything at a given price is the amount of it which will be bought per unit of time at that price.”
Another good definition of demand, given by Bober is—
“the various quantities of a given commodity or service which consumers would buy in one market in a given period of time at various prices, or at various incomes, or at various prices of related goods”
These definitions of demand assumes three aspects of demand.
1. Desire to have something.
2. Ability to pay.
3. Willingness to pay.

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