A lease is a legal agreement between a landlord and a tenant that allows the tenant to use a property for a specified period in exchange for rent. This document outlines the terms and conditions, including the duration of the lease, the amount of rent, and responsibilities for maintenance and repairs. Leases are commonly used for residential properties, such as apartments and houses, as well as commercial spaces like offices and retail stores. Both parties must adhere to the lease terms, and breaking the agreement can lead to penalties or legal consequences.