Require
Part of speech: verb
Definition: To ask (someone) for something; to request. To demand, to insist upon (having); to call for authoritatively. Naturally to demand (something) as indispensable; to need, to call for as necessary. To demand of (someone) to do something.
Demand
Part of speech: verb
Definition: To request forcefully.To claim a right to something.To ask forcefully for information.To require of someone.To issue a summons to court.
Part of speech: noun
Definition: The desire to purchase goods and services.The amount of a good or service that a consumer is willing to buy at a particular price.A need.A claim for something.A requirement.An urgent request.An order.(electric) the measure of the maximum power load of a utility's customer over a short period of time; the power load integrated over a specified time interval.