What type of lease is characterized by a specific time period, such as six months?

A lease characterized by a specific time period, such as six months, is known as an estate for years. This type of lease clearly defines both the start and end dates, making it distinct from other lease types. Unlike a periodic tenancy, which automatically renews at the end of each period (like monthly or yearly), or a month-to-month lease, which allows the tenant to stay beyond the initial rental period unless properly terminated, an estate for years is not subject to automatic renewal and provides certainty regarding the rental duration.

Additionally, it's important to note that a tenancy at sufferance occurs when a tenant remains in a property after their lease has expired without the landlord's consent, which does not fit the definition of a specified lease period. Thus, an estate for years is the correct choice here, as it specifically refers to a lease with a definite timeframe, making it a vital concept in property law and leasing arrangements.