Both Uses

demise
in
The Princess Diaries
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Norman has kind of thick glasses, and I bet he couldn't actually hit anything, even with a machine gun, which even a lunatic like Norman is allowed to buy in this country thanks to our totally unrestrictive gun laws, which Michael Moscovitz says in his webzine will ultimately result in the demise of democracy as we know it.†
Chpt 2 *
But unfortunately, it turned out there was more to the agreement: I, the undersigned, Amelia Mignonette Grimaldi Thermopolis Renaldo, agree to fulfill the duties of heir to Artur Christoff Phillipe Gerard Grimaldi Renaldo, prince of Genovia, and all that such a role entails, including but not exclusive to, assuming the throne upon the latter's demise and attending functions of state at which the presence of said heir is deemed essential.†
Chpt 2

Definitions:

(1) (demise)
death or the end of something -- especially a slow ending
(2) (meaning too rare to warrant focus)
Lawyers may use demise to reference various types of transfers.