Fraud: In the broadest sense, a fraud is an intentional deception made for personal gain or to damage another individual. The specific legal definition varies by legal jurisdiction. Fraud is a crime, and is also a civil law violation.
Different kinds of fraudulent activities:
Bait and switch: is a form of fraud in which the party putting forth the fraud lures in customers by advertising a product or service at an unprofitably low price, then reveals to potential customers that the advertised good is not available but that a substitute is.
Embezzlement: is the act of dishonestly appropriating or secreting assets, usually financial in nature, by one or more individuals to whom such assets have been entrusted.[1] It is a kind of financial fraud. For instance, a clerk or cashier handling large sums of money can embezzle cash from his or her employer, a lawyer can embezzle funds from clients' trust accounts, a financial advisor can embezzle funds from investors, or a spouse can embezzle funds from his or her partner.
Tax avoidance: is the legal utilization of the tax regime to one's own advantage, to reduce the amount of tax that is payable by means that are within the law. By contrast tax evasion is the general term for efforts to not pay taxes by illegal means.
Identity theft: is a term used to refer to fraud that involves someone pretending to be someone else in order to steal money or get other benefits. The term is relatively new and is actually a misnomer, since it is not inherently possible to steal an identity, only to use it.
Sham marriage: is a union (marriage) motivated not so much by love but instead by a desire for political advantage or personal convenience.