On one side of the road rose a high, rough bank, where hazels and stunted oaks, with their roots half exposed, held uncertain tenure: the soil was too loose for the latter; and strong winds had blown some nearly horizontal.
There are no more uses of "tenure" in the book.
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1,00o MARKS "These are the faces of every Resistance fighter I’ve hunted down, every Scholar I’ve jailed and executed, most before my tenure as Commandant.
Sabaa Tahir -- An Ember in the Ashes
Amy was the tiniest and the most obnoxious of the new crop of Eminemlettes, and she was smitten with Little Janet, who despite her two-year tenure in prison seemed to have no idea how to handle a middle-school crush.