Employees have a duty to protect and conserve Government property and must not use such property, or allow its use, for other than authorized purposes.
Here are some definitions that you might find helpful:
Government Property: Includes any form of real or personal property in which the Government has an ownership, leasehold, or other property interest as well as a right or other intangible interest that is purchased with Government funds, including the services of contractor personnel. The term includes office supplies, telephone and other telecommunications equipment and services, the Government mails, automated data processing capabilities, printing and reproduction facilities, Government records, and Government vehicles.
Authorized Purposes: Are those purposes for which the Government property is made available to members of the public or those purposes authorized in accordance with law or regulation.