Motivation
Part of speech: noun
Definition: Willingness of action esp. in behavior The action of motivating. Something which motivates. An incentive or reason for doing something. a research rating that measures how the rational and emotional elements of a commercial affect consumer intention to consider, visit, or buy something.
Example sentence: When you look at people who are successful, you will find that they aren't the people who are motivated, but have consistency in their motivation.
Need
Part of speech: noun
Definition: Something required.
Part of speech: verb
Definition: To have an absolute requirement for.To want strongly; to feel that one must have something.To be obliged or required to.
Example sentence: It is not light that we need, but fire; it is not the gentle shower, but thunder. We need the storm, the whirlwind, and the earthquake.