A scam is a fraudulent scheme used to make money. True. A scam is an illegal plan for making money (a financial risk), especially when it involves tricking people. It is any deceptive and/or fraudulent scheme or action that is usually intended to gain financial advantage. There are types of scams such as online ones. The practice is based on inducing in some way the victim to send amounts of money in exchange for tempting promises.
Scammers will use any means possible to steal your money. They invent convincing and seemingly legitimate reasons to give you false hope.