Offer and acceptance are fundamental elements of a contract:

1. Offer: An offer is a clear and definite proposal made by one party to another, expressing an intention to enter into a contract. It must be communicated with specific terms and conditions, indicating the willingness to be bound by those terms.

2. Acceptance: Acceptance is the unqualified agreement by the other party to the exact terms of the offer. It must be communicated effectively and mirror the offer without any modifications or changes.