coda
US /ˈkoʊ.də/
UK /ˈkoʊ.də/

1.
the concluding passage of a piece or movement, typically forming an addition to the basic structure.
:
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The symphony ended with a powerful coda.
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The final movement includes an extended coda.
2.
a concluding part of a literary or dramatic work.
:
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The novel's coda offered a glimpse into the characters' future.
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His speech included a brief but impactful coda.