What is meant by fraud under the Indian Contracts Act, 1872?

According to Section 17 if the Indian Contracts Act, 1872, Fraud means and includes any of the following acts committed by a party to a contract, or with his connivance, or by his agents , with intent to deceive another party thereto or his agent, or to induce him to enter into the contract:

1. the suggestion as a fact, of that which is not true, by one who does not believe it to be true;
2. the active concealment of a fact by one having knowledge or belief of the fact;
3. a promise made without any intention of performing it;
4. any other act fitted to deceive;
5. any such act or omission as the law specially declares to be fraudulent.