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SURRENDER OF TENANCY
When a tenant leaves leased property and returns control to the landlord.

Bouvier's Law Dictionary
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Oxford Dictionary of Law, 5th edition v.1

surrender of tenancy

The termination of a Iease, which occurs when a tenant gives up his interest to his landlord. Surrender can be express or implied. Express surrender is usually in the form of a deed. When the lease is for less than three years, no deed is needed provided that the tenant signs a written agreement to surrender. Implied surrender occurs when the actions of both parties show that they consider the lease to be at an end; for example, when the tenant gives up possession and the landlord reoccupies the property.

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Black’s Law Dictionary 2nd

SURRENDER OF TENANCY

Abandoning a property leased or early lease termination with the landlord’s consent.

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Note added at 6 hrs (2020-12-13 20:56:52 GMT)
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delivery is mostly used for movable properties.