Is deliberate deception to secure an unfair or unlawful gain. It is both a civil wrong (a fraud victim may sue the fraud perpetrator to remedy the fraud and/or recover compensation) and a criminal offence (a fraud perpetrator may be prosecuted and imprisoned by the government authorities).

When applied to promises, agreements or contracts, the term denotes that such agreements have no legal effect. The law disapproves of such conduct because it is immoral or contrary to public policy. Unlawful does not necessarily imply criminality, although the term is sufficiently broad to include it.

The crime of hiding, disguising or moving money obtained from criminal activities to make it look like the money has been obtained legally.

Any matter of fact that a party to a claim or action offers to provide to prove or disprove an issue in the case. The strongest type of evidence is that which provides direct proof of the truth of an assertion. At the other extreme is evidence that is merely consistent with an assertion but does not rule out other, contradictory assertions, and may be viewed as circumstantial evidence.