Both Uses

finale
in
That Summer, by Sarah Dessen
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It was all a bit overwhelming, a definite change from the show of last year, which consisted of one lone ficus tree that the models walked by, posed around, and then pulled to the edge of the stage for the big finale, where they threw its leaves on the audience to symbolize fall.†
Chpt 9 *
For the grand finale, which was always a showcase of evening wear for Christmas balls and dances, the models came out in tight black dresses and spike heels, with their hair pulled straight back and lips bright red, the rest of their faces white and pale as if they were very sick.†
Chpt 9

Definitions:

(1) (finale)
the final part of a series of events -- often of a performance and especially a musical performance
(2) (meaning too rare to warrant focus)