Indian Contract Law Act 1872

Voidable Contract section 2i

An agreement enforceable by law at the option of one or more parties not at the option of the other or others.

Contract section 2h

An agreement enforceable by law.

Reciprocal promise section 2f

Promises for consideration or a part of consideration for each other .

proposal section 2a

When one signifies his willingness to do or abstain from doing such an act or abstinence is called a proposal.

void agreement section 2g

an agreement not enforceable by law..

Consideration section 2d

when at the desire of the promisor,the promisee has done or abstained from doing or does or abstains from doing or promises to do or abstains from doing something such an act ,promise or abstinence is called consideration.

Agreement section 2e

Every promise and set of promises forming consideration for each other.