A lie is a type of deception in the form of an untruthful statement with the intention to deceive, often with the further intention to maintain a secret or reputation, or to avoid punishment. To lie is to state something one knows is false with the intention that it be taken for the truth by someone else. A liar is a person who is lying, who has lied, or who lies repeatedly.

Lying is typically used to refer to deceptions in oral or written communication. Other forms of deception, such as disguises or forgeries, are generally not considered lies, though the underlying intent may be the same; however, even a true statement can be considered a lie if the person making that statement is doing so to deceive. In this situation, it is the intent of being untruthful rather than the truthfulness of the statement itself that is considered.
White lie
A white lie would cause no discord if it were uncovered and offers some benefit to the liar or the hearer, or both. As a concept, it is largely defined by local custom and can not be clearly separated from regular lies with any authority. As such the term may have differing meanings in different cultures. Lies which are harmless but told for no reason are generally not called white lies.

In western countries, a white lie is typically taken to mean an untruth with an alleged justification such as to avoid upsetting a person, to encourage a person or just for harmless convenience. An example of a white lie is a nurse who reassures a disfigured patient that he looks healthy, or an aged husband who assures his wife that she looks just as good as when he married her. This kind of white lie is, in many instances, known to be an untruth by all involved parties, but overlooked out of diplomatic tact or politeness. For example, when two people collide in a crowded hallway and one falls down, he might tell the other that he's not hurt, even if he's hurt a little bit.
They both are deception..